GmatKiss wrote:A leading figure in the Scottish enlightenment, Adam Smith's two major books are to democratic capitalism what Marx's Das Kapital is to socialism.
A. Adam Smith's two major books are to democratic capitalism what
B. Adam Smith's two major books are to democratic capitalism like
C. Adam Smith's two major books are to democratic capitalism just as
D. Adam Smith wrote two major books that are to democratic capitalism similar to
E. Adam Smith wrote two major books that are to democratic capitalism what

0A after some discussion

mukgera wrote:As per my understanding the answer should be A.
Firstly to we need the idiom in proper format (x is to y what w is to z)
Only choices A and E satisfies this condition.

Now to maintain parallelism in the two part of sentence
"Adam Smith's two major books are to democratic capitalism"
&
"Marx's Das Kapital is to socialism"

It should be mentioned in the sentence what is being compared b/w the two which is explained only by choice E only "wrote".