aniruddhkashyap wrote:Another sentence correction question where i need a clarification......
Q32: To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.
A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economical
The answer for this question is given as E but I felt D is more appropriate
(A) is incorrect because of the incorrect comparison. "Now" almost seems like a person in this sentence construction.
(B) is incorrect because "economical" and "economic" do not have the same connotation. Economical means "thrifty".
(C) fixes the error in comparison but retains the error in "economical".
(E) repeats the mistake in (A) by comparing the knowledge of social and economic determinants to "now".
(D) is the correct answer because it correctly conveys that demographers would have to know more than they presently know (do) about the social and economic determinants.