gud1

[geet]

Marconi’s conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is precisely the opposite, a tool for communicating with a large, public audience.

A. Marconi’s conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is
B. Marconi conceived of the radio as a substitute for the telephone, a tool for private conversation, but which is
C. Marconi conceived of the radio as a tool for private conversation that could substitute for the telephone; instead, it has become
D. Marconi conceived of the radio to be a tool for private conversation, a substitute for the telephone, which has become
E. Marconi conceived of the radio to be a substitute for the telephone, a tool for private conversation, other than what it is,

[goelmohit2002]

IMO C.

Conceived of X as Y....is the correct idiom.

A. Marconi’s conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is
a tool modifies telephone wrongly.

B. Marconi conceived of the radio as a substitute for the telephone, a tool for private conversation, but which is
a tool modifies telephone wrongly.

C. Marconi conceived of the radio as a tool for private conversation that could substitute for the telephone; instead, it has become
correct.

D. Marconi conceived of the radio to be a tool for private conversation, a substitute for the telephone, which has become
Incorrect idiom. Which incorrectly modifies telephone.

E. Marconi conceived of the radio to be a substitute for the telephone, a tool for private conversation, other than what it is,
a tool modifies telephone wrongly. Wrong Idiom. Other than is not a preferred way to show contrast in GMAT.

[kaulnikhil]

according to Manhattan Sc .. could expresses uncertainty ..thus c tells that Marconi was not sure about radio as a telephone..whereas original sentence says that he was very much sure ...so how can v gov for C ..doesnt it change the meaning ??

[mehravikas]

Between A and C...I would go with C

[geet]

OA is C only

[navdeepbajwa]

OG says C is correct But why "it" refers to radio not telephone why does not it refer to telephone it it closer than radio

[2010gmat]

Marconi's conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is precisely the opposite, a tool for communicating with a large, public audience.

A. Marconi's conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is
B. Marconi conceived of the radio as a substitute for the telephone, a tool for private conversation, but which is
C. Marconi conceived of the radio as a tool for private conversation that could substitute for the telephone; instead, it has become
D. Marconi conceived of the radio to be a tool for private conversation, a substitute for the telephone, which has become
E. Marconi conceived of the radio to be a substitute for the telephone, a tool for private conversation, other than what it is,

IMO c

[pesfunk]

Well the answer C is pretty evident as all the other options have modifier issues and can be eliminated.

IMO C.

Conceived of X as Y....is the correct idiom.

A. Marconi�s conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is
a tool modifies telephone wrongly.

B. Marconi conceived of the radio as a substitute for the telephone, a tool for private conversation, but which is
a tool modifies telephone wrongly.

C. Marconi conceived of the radio as a tool for private conversation that could substitute for the telephone; instead, it has become
correct.

D. Marconi conceived of the radio to be a tool for private conversation, a substitute for the telephone, which has become
Incorrect idiom. Which incorrectly modifies telephone.

E. Marconi conceived of the radio to be a substitute for the telephone, a tool for private conversation, other than what it is,
a tool modifies telephone wrongly. Wrong Idiom. Other than is not a preferred way to show contrast in GMAT.

[Jim@Grockit]

according to Manhattan Sc .. could expresses uncertainty ..thus c tells that Marconi was not sure about radio as a telephone..whereas original sentence says that he was very much sure ...so how can v gov for C ..doesnt it change the meaning ??

Keep in mind that "could" is also the past tense of "can", so the certain and uncertain get collapsed into "could" in the past tense.

He says he can make it there by the end of the day. (certain)
He says he could make it there by the end of the day. (uncertain, possible)

He said that he could make it there by the end of the day.