A、5%. B、10%. C、15%. D、20%. C根据原文，调查显示，人们提到的第三个最受欢迎的运动是网球。故答案是C。四个选项都是体育运动，初步猜测题目和参与的运动有关。根据原文，四个选项都有被提到，按照受欢迎的程度，第一位是jogging，然后是

W: Sam, could you review the results of the survey on leisure sporting activities again? We need to plan our proposal for tomorrow’s meeting.
M: Sure. I’ve summarized the results in the handout, broken down by consumer age groups and sporting activities. The survey was administered to 550 men and women between the ages of 18 and 55 years old. The results have been compiled in the following age groups: 18 to 26, 27 to 35, 36 to 45, and 46 to 55. According to the results, [13]the most active group involved in sporting activities are those between 18 and 26 years old, followed by those 36 to 45 years old.
W: Okay.
M: As far as particular sports are concerned, people in these two groups cited jogging as their favorite recreational sport followed by skiing, tennis, swimming, and cycling.
W: Hmm. Based on what you’ve said, I think we should consider targeting the 18 to 26 year-old age group more in the future. I also feel we should consider expanding our line of athletic shoes, particularly jogging and tennis footwear. We also have to come up with a more appealing slogan aimed at this age group.
M: I see what you mean. However, when these results are compared with the survey carried out three years ago, we can see a growing trend among older consumers—those 14, I mean [15]46 to 55—who are becoming more conscious and concerned about staying fit. I believe this trend will continue, so we should focus on this group instead.
W: I see your point. Well, let’s meet again on Wednesday to iron out more of the details of this proposal.
13. Which group seems to be most active in sports?
14. Which sport was cited as the third most popular?
15. What is the man’s suggestion on the marketing strategies?