Select the most appropriate option that can substitute the highlighted segment in the given sentence. If there is no need to substitute it, select ‘No substitution required’.
Psychology and Sociology are very interesting science to study.

Correct option is D

The correct substitution of the highlighted words is (d) sciences to study.
Explanation:
"Psychology" and "Sociology" are two different subjects, hence the plural form "sciences" should be used instead of "science." Since two subjects are involved, singular "science" would be grammatically incorrect.
Grammatical rule used:
When two or more nouns are connected by "and" and refer to different things, the verb and the related noun must be plural.
Example:
· Physics and Chemistry are interesting sciences to explore.
�� Info Booster: When two singular subjects connected by 'and' denote different things, plural form must be used for both noun and verb.