Choose the sentence with the correct use of a preposition: After winter vacations, the University is opening in Monday, After winter vacations, the University is opening on Monday, After winter vacations, the University is opening by Monday, After winter vacations, the University is opening at Monday

Choose the sentence with the correct use of a preposition: After winter vacations, the University is opening in Monday, After winter vacations, the University is opening on Monday, After winter vacations, the University is opening by Monday, After winter vacations, the University is opening at Monday

Explanation

"On" is the correct preposition used with days of the week.

It shows the exact day something will happen.