In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
I wondered what one would have thought some 40 years ago if you (had said) you could heat liquid using a plastic container.
(a)having said
(b)had say
(c)have saying
(d)no improvement

Options

A. having said
B. had say
C. have saying
D. no improvement

Answer

D