Identify the correct tense form of the highlighted part in the given sentence.
I learnt Tamil when I was posted in Chennai.

Correct option is A

The correct tense of the highlighted part is Simple Past.
Explanation:
· The verb “learnt” is the second form of “learn”.
· It indicates a completed action in the past.
· The time reference ( when I was posted in Chennai) confirms past time.
Rule:
Simple Past = V2 / Verb + ed, used for actions completed in the past.
Example:
· She completed her degree in 2020.
Why other options are incorrect:
· Simple Present → used for habitual facts.
· Past Perfect → requires had + V3.
· Past Perfect Continuous → requires had been + V-ing.