Final answer:
The complement of B represents the probability of a child not having brown hair. To find this probability, subtract the probability of B from 1.
Step-by-step explanation:
The complement of B represents the probability of a child not having brown hair, which in this case would be having blond hair. To find the probability of the complement of B, we subtract the probability of B from 1. Since there are 168 brown-haired people in a population of 200, the probability of B is 168/200 = 0.84. Therefore, the probability of the complement of B is 1 - 0.84 = 0.16.