Change the sentence to express a condition using a participle.
I can lend you my book, but you must return it to me tomorrow.

The correct option is A I can lend you my book provided you return it to me tomorrow.
A phrase is a group of words that is an important component in any sentence. The participle phrase will begin with a present or past participle. The present participle phrase ends with -ing. The past participle phrase ends with -ed, -d, -t, -en, or -n.

Thus, option A is the correct answer as 'provided' is used as a past participle.