答案：D

解析：

Choice D is correct. In the sample, the total number of participants who brought laptops on vacation was 324. It is given that the participant brought a laptop on vacation. Therefore the probability that the participant was female given that the participant brought a laptop on vacation is the probability of selecting a female from the group of participants who brought laptops. This can be calculated as 212/324≈.65. Therefore the probability of selecting a female given that a participant brought a laptop on vacation is approximately .65.