单选题 Students self-rating on "emotional health" and "physical health" reached all-lime lows. The reason may be ______.

A、 the increasing competitive pressures
B、 problems at home
C、 increasing stress
D、 strong interest in health protessions

【正确答案】 B

【答案解析】文章第三段指出"Problems at home may be a cause”，即家庭内部的问题可能是导致学生身心不够健康的一个原因，同时作者近一步指出"high percentages of freshmen reported their father’s occupation as“unemployed”(3.7％)”，即有3.7％的新生的父亲是失业的。故答案为A。