A、 It is farming that gives human beings enough leisure time for sporting activities.
B、 Farming is very important in human civilization because it saves human beings from risks and uncertainties of hunting for survival.
C、 It is hunting that provides human beings with much simpler ways of obtaining meaty meals.
D、 Sporting activities satisfy the desire of modern man to exercise hunting skills which his forefathers developed for survival.

【正确答案】 D

【答案解析】 主旨大意题。听力原文的开始就点明了本文的大意。Sporting activities是本文的主旨关键词，接着用To understand how this transformation..., to do的形式进一步点名主旨。故答案为D。