Choose the correct option and complete the given sentence with Adject…

The correct answer is Option (1) → which I must take

An adjective is a word that describes a noun or a pronoun, for example a tall tree, the food is tasty.

Complete sentence: The doctor has given me medicine which I must take. "Medicine" is a thing, so the clause is which I must take. It tells us which medicine.

Option	What it tells	Example
(1) which I must take (answer)	An adjective clause has its own subject and verb and describes a noun, as an adjective does. It begins with a relative pronoun chosen to suit the noun: who / whom for people, which (or that) for things, whose for possession, always followed by a noun (whose bag, whose house).	This is the book which I bought yesterday.
(2) where I must take	Where refers to a place. Medicine is not a place.	–
(3) whose I must take	Whose shows possession and must be followed by a noun. "Whose I must take" is incomplete.	–
(4) who I should take	Who is used for people, not for things such as medicine.	–