Final answer:
Keli can use a 4-cup measuring cup to measure her rice, filling it fully three times and three quarters full once to make a total of 15 cups or 3.75 quarts.
Step-by-step explanation:
Keli needs to measure out cups of rice for her chicken and rice casserole. To find out which measuring cups to use, we need to take into account the standard measuring cup sizes, which are 1 cup, ½ cup, ⅓ cup, ¼ cup, and ⅛ cups. As the question doesn't specify the exact amount required in 'cups', let's assume Keli needs 3 cups of rice for one batch and she's making 5 batches, hence she will need a total of 15 cups of rice. Given that 1 quart equals 4 cups, she would require 3.75 quarts of rice (since 15 cups divided by 4 cups per quart equals 3.75 quarts).
To measure this amount, Keli can use a larger 4-cup (which equals 1 quart) measuring cup, filling it three times completely and one additional time ¾ full to account for the 0.75 of a quart. It's practical and minimizes the number of measurements she needs to make.