Anthony bought 5 gallons of milk on Monday and placed them in his refrigerator. Each day he drinks 2 quarts of milk. How many quarts of milk will Anthony still have on Thursday night after he drank his milk for the day?

20
18
12
8

Anthony will have 8 quarts of milk left on Thursday night.

Given:
- He bought 5 gallons of milk, which is equivalent to 20 quarts.
- He drinks 2 quarts of milk each day.
- It is currently Thursday night, so 3 days have passed since Monday.

Total milk consumed so far: 2 quarts/day x 3 days = 6 quarts
Total milk left: 20 quarts - 6 quarts = 14 quarts
Anthony will still have 14 quarts of milk left on Thursday night.