6403. Kamini could not recollect the incident that had happened in her chilhood.

✅ The correct answer is option B.
Remind : cause (someone) to remember someone or something.

Recall : cause one to remember or think of.

Memorise : commit to memory; learn by heart.

Assemble : (of people) gather together in one place for a common purpose.

Recollect : remember (something); call to mind.

Synonym of Recollect is Recall