Fill in the blank with the correct word from the options given below:…

The correct answer is Option (3) → when

An adverb is a word that tells how, when, where or how much something happens. It can also describe an adjective or another adverb, for example she sings sweetly, very hot.

Complete sentence: I fondly remember the time when my friends and I went to Rishikesh. The clause "my friends and I went to Rishikesh" describes the time, so it is joined by when.

Option	What it tells	Example
(1) who	"Who" is a relative pronoun used for persons. "The time" is not a person.	The girl who won the race is my sister.
(2) where	"Where" follows a noun of place. Here the noun is "the time".	This is the village where my father grew up.
(3) when (answer)	A relative adverb joins a clause to a noun before it: when after a noun of time (the day, the year, the time). where after a noun of place. why after "the reason".	I can never forget the day when I first rode a bicycle.
(4) which	"Which" is a relative pronoun that must be the subject or object of its clause. "My friends and I went to Rishikesh" is already complete and has no place for it.	The book which you lent me is very interesting.