vishalwin wrote:para1: In 1994, a team of scientists led by David McKay
began studying the meteorite ALH84001,.....................................


para2:

Skepticism about the McKay team's claim
remains, however. For example, ALH84001 has
been on Earth for 13,000 years, suggesting to
some scientists that its PAHs might have resulted
from terrestrial contamination. However, McKay's
team has demonstrated that the concentration of
PAHs increases as one looks deeper into
ALH84001, contrary to what one would expect from
terrestrial contamination. The skeptics' strongest
argument, however, is that processes unrelated to
organic life can easily produce all the evidence
found by McKay's team, including PAHs. For
example, star formation produces PAHs. Moreover,
PAHs frequently appear in other meteorites, and no
one attributes their presence to life processes. Yet
McKay's team notes that the particular combination
of PAHs in ALH84001 is more similar to the
combinations produced by decaying organisms than
to those originating from nonbiological processes.



The passage suggests that if a meteorite contained PAHs that were the result of terrestrial contamination, then one would expect which of the following to be true?

(A) The meteorite would have been on Earth for
more than 13,000 years.

(B) The meteorite would have originated from a
source other than Mars.

(C) The PAHs contained in the meteorite would have
originated from nonbiological processes.

(D) The meteorite would contain fewer PAHs than
most other meteorites contain.

(E) The PAHs contained in the meteorite would be
concentrated toward the meteorite's surface.



according to the bolded part in passage the answer to the above question should be option c but OA is E.



Similarly for the below question the answer should have been option B.



20. The passage suggests that the fact that ALH84001 has been on Earth for 13,000 years has been used by some scientists to support which of the following claims about ALH84001?

(A) ALH84001 may not have originated on Mars.

(B) ALH84001 contains PAHs that are the result of
nonbiological processes.

(C) ALH84001 may not have contained PAHs when it
landed on Earth.

(D) The organic molecules found in ALH84001 are
not PAHs.

(E) The organic molecules found in ALH84001 could
not be the result of terrestrial contamination


Can anyone please help me?

vishalwin wrote:para1: In 1994, a team of scientists led by David McKay
began studying the meteorite ALH84001,.....................................


para2:

Skepticism about the McKay team's claim
remains, however. For example, ALH84001 has
been on Earth for 13,000 years, suggesting to
some scientists that its PAHs might have resulted
from terrestrial contamination. However, McKay's
team has demonstrated that the concentration of
PAHs increases as one looks deeper into
ALH84001, contrary to what one would expect from
terrestrial contamination. The skeptics' strongest
argument, however, is that processes unrelated to
organic life can easily produce all the evidence
found by McKay's team, including PAHs. For
example, star formation produces PAHs. Moreover,
PAHs frequently appear in other meteorites, and no
one attributes their presence to life processes. Yet
McKay's team notes that the particular combination
of PAHs in ALH84001 is more similar to the
combinations produced by decaying organisms than
to those originating from nonbiological processes.



The passage suggests that if a meteorite contained PAHs that were the result of terrestrial contamination, then one would expect which of the following to be true?

(A) The meteorite would have been on Earth for
more than 13,000 years.

(B) The meteorite would have originated from a
source other than Mars.

(C) The PAHs contained in the meteorite would have
originated from nonbiological processes.

(D) The meteorite would contain fewer PAHs than
most other meteorites contain.

(E) The PAHs contained in the meteorite would be
concentrated toward the meteorite's surface.



according to the bolded part in passage the answer to the above question should be option c but OA is E.



Similarly for the below question the answer should have been option B.



20. The passage suggests that the fact that ALH84001 has been on Earth for 13,000 years has been used by some scientists to support which of the following claims about ALH84001?

(A) ALH84001 may not have originated on Mars.

(B) ALH84001 contains PAHs that are the result of
nonbiological processes.

(C) ALH84001 may not have contained PAHs when it
landed on Earth.

(D) The organic molecules found in ALH84001 are
not PAHs.

(E) The organic molecules found in ALH84001 could
not be the result of terrestrial contamination


Can anyone please help me?