Some more questions!!

[jangojess]

Some more questions from 1000 SC

Biologists believe that they have found one of the substances that tell individual genes both when to become active and when to remain quiescent in the earliest phases of an embryo’s development.
(A) tell individual genes both when to become active and when to remain
(B) tell individual genes both at which time they should become active or should remain
(C) tells individual genes both when to become active or remain
(D) tells individual genes both when to become active or when to remain
(E) will tell an individual gene both about when it should become active and remain


The single-family house constructed by the Yana, a Native American people who lived in
what is now northern California, was conical in shape, its framework of poles overlaid
with slabs of bark, either cedar or pine, and banked with dirt to a height of three to four
feet.
A. banked with dirt to a height of
B. banked with dirt as high as that of
C. banked them with dirt to a height of
D. was banked with dirt as high as
E. was banked with dirt as high as that of


Certain pesticides can become ineffective if used repeatedly in the same place; one reason is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals.
(A) Certain pesticides can become ineffective if used repeatedly in the same place; one reason is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals.
(B) If used repeatedly in the same place, one reason that certain pesticides can become ineffective is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals.
(C) If used repeatedly in the same place, one reason certain pesticides can become ineffective is suggested by the finding that much larger populations of pesticide-degrading microbes are found in soils with a relatively long history of pesticide use than those that are free of such chemicals.
(D) The finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals is suggestive of one reason, if used repeatedly in the same place, certain pesticides can become ineffective.
(E) The finding of much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in those that are free of such chemicals suggests one reason certain pesticides can become ineffective if used repeatedly in the same place.

[BTGmoderatorRO]

To the first paragraph Question,
Option C does not follow "tells individual genes both when to become active or when to remain active". "Both" is talking about the things and it does not follow two distinct "phase in the question". Option C is incorrect because the singular 'tells' cannot be used in the sentence as it is referring to two phases active and 'quiescent'

Option E is in correct "both" cannot follow about.

Option B is wavy because 'tell individual genes both at which time' is a bad sentence usage.

Option D is incorrect because it is quite similar to option C. The singular verb 'tells' cannot explain two elements 'active' and 'quiescent'.

Option A is the most likely the correct option because it fully encompasses he full analysis of what a good sentence portray. "tell individual genes at which time they should become active or should remain".