Select the most appropriate option that can substitute the highlighted segment in the given sentence.
While I was driving the car, my brother talked over phone to his kid.

Correct option is A

The correct substitution of the highlighted words is (a) was talking over the phone.
Explanation: The sentence has two simultaneous past actions — one is "I was driving" and the other is "my brother was talking". So, to show parallel actions in the past continuous, both verbs must be in past continuous tense. Also, the article “the” is mandatory before “phone” in standard usage (over the phone).
Grammatical rule used:
· When two actions happen at the same time in the past, we use the Past Continuous Tense for both: Subject + was/were + V1+ing.
· Use “the” before nouns like phone, radio, television when used with fixed prepositions like “over”.
Example:
· While I was reading, she was cooking.
Information Booster:
· Talked = Simple past → not appropriate for simultaneous actions.
· Had talked = Past perfect → indicates an earlier completed action.
· Talking = Verb missing auxiliary, so grammatically incomplete.