Scientist now hope that cloning can successfully be conducted in human beings in the near future.

Options

A. No error
B. can successfully be conducted in
C. human beings in the near future
D. Scientist now hope that cloning

Answer

D

Explanation

believe (V.) : to feel certain thatsomethingis true Hence, Scientists (plural) now hope/believe is the right usage.
Plural subject agrees with Plural Verb.