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’.
The cashier admitted that he was make a mistake.

Correct option is B

The correct substitution of the highlighted words is (b) had made a mistake.
Explanation:
The correct tense after “admitted that” is past perfect, as it refers to an action completed in the past before another past action.
“Was make” is grammatically incorrect.
Grammatical Rule:
· Reporting verb in past → Reported clause in past perfect.
Structure:
· Subject + admitted + that + subject + had + V3.
Example:
· He admitted that he had taken the money.
Other options:
· (a) have make – incorrect tense and verb form.
· (c) No substitution required – incorrect; "was make" is grammatically wrong.
· (d) will make – changes the meaning to future.