Answer:
C. 9
Explanation:
He is going to have 12 people including himself, and each is going to have 750 mL
12*750
9000 mL
There are 1000 mL in each liter, so divide 9000 by 1000
9000/1000=9
So he needs to buy 9, 1 liter containers of fruit punch
Hope this helps :)