Write a ratio for the situation in three ways, comparing the first quantity to the second quantity.

A zoo has 14 monkeys and 18 chimpanzees.
18 to 14, 18:14, 18/14
14 to 28, 14:28, 14/28
18 to 14, 14:18, 14/18
14 to 18, 14:18, 14/18 (My answer)

looks good

Your answer is incorrect. The correct ratio for the situation, comparing the first quantity (monkeys) to the second quantity (chimpanzees), is:

14 to 18, 14:18, or 14/18

Your answer is correct. The ratio comparing the number of monkeys to the number of chimpanzees is 14:18 or 14/18. This means that for every 14 monkeys, there are 18 chimpanzees.