Select the most appropriate option that can substitute the highlighted segment in the given sentence.
The objective of Robotics are to interrogate smart machines that can help people in a variety of ways.

Correct option is A

The correct substitution of the highlighted words is (a) is to develop.
Explanation: The subject of the sentence is "The objective", which is singular. Therefore, the verb must also be singular — "is". Also, the verb interrogate is incorrect in this context. The objective is not to question machines, but to create or develop them. So, “is to develop” is both grammatically and contextually correct.
Grammatical rule used:
· Subject-verb agreement: Singular subject (e.g. "Objective") requires singular verb ("is").
· Verb usage: Choose verbs that logically match the subject and context.
Example: The purpose of this seminar is to inspire young minds.
Information Booster:
· Interrogate = to question someone intensely → inappropriate in context.
· Develop = to create or improve → fits the context of Robotics' goal.
· Bully, facilitate, levitate = unrelated to the context of creating machines.