Fill in the blanks with suitable Adjective clause. Choose the appropriate option.

The doctor has given me medicines __________.

Which I must take

The correct answer is Option (1) - Which I must take

An adjective clause modifies a noun or pronoun. In this sentence, the clause "which I must take" properly describes the "medicines" by specifying what needs to be done with them.

"The doctor has given me medicines which I must take."