grammar question

[zakat]

I was pracrticing with grammar and couldn't understand the question's choice.
"So are you coming to the party tonight?"
"My mom said I can go provided I ____ home by 11."
a. am
b. will be
c. were
d. would be

why the correct answer is a?

Thanks

[5jj]

Welcome to the forum, zakat.

I was pracrticing practising (British English) with grammar and couldn't understand the question's choice of answer.
"So are you coming to the party tonight?"
"My mom said I can go provided I ____ home by 11."
a. am.....b. will be.....c. were.....d. would be

w Why is the correct answer is a?

In conditional sentences about future situations, the verb in the conditional clause (introduced by if, provided (that), providing (that), and similar expressions) is normally in a present tense.

Please try to give your threads helpful titles. 'Question about tense' would have been fine for this.