Select the most appropriate option to substitute the highlighted segment.
Wasim agreed to share his notes with Arif on conditions that he are return them in a day.

Correct option is D

The correct substitution of the highlighted words is (d) on the condition that he would return.
Explanation:
The phrase “on conditions that he are return” is grammatically incorrect for two reasons:
1. “on conditions” should be “on the condition” – singular and specific.
2. “he are return” is incorrect in both subject-verb agreement and tense.
The context implies a conditional promise in the past. Since "agreed" is in past tense, the condition also needs to be expressed using the past form "would return".
Grammatical rule used:
· Conditional clauses in reported speech typically follow this format:
· Past + would + base verb
· Example:
· She promised that she would help me.
· He agreed on the condition that he would arrive on time.
Information Booster:
“On the condition that” is a fixed phrase used to express a binding requirement. Always use singular “condition” and match tense to context.