问题详情

At a recent seminar, many participants were worried about the fact that overpopulation may give rise to many social security problems.
3. What does the statement mean？
A. Many people are concerned about their security.
B. Social security bears no relation to population.
C. Most social security problems are caused by a few people.
D. Too many people may result in social security problems. 请帮忙给出正确答案和分析，谢谢！