Final answer:
To convert 24 gallons to cups, multiply the number of gallons by 8. The answer is 192 cups.
Step-by-step explanation:
The expression that shows how to convert 24 gallons to cups is option C - 24 × 8.
The conversion factor between gallons and cups is 8 cups per gallon. To convert gallons to cups, multiply the number of gallons by 8.
So, 24 gallons × 8 cups/gallon = 192 cups.