If industrial pollution continues to deplete the ozone layer, the resulting increase in ultraviolet radiation will endanger human health, causing a rise in the incidence of skin cancer and eye disease, and perhaps even threatening global ecological systems.
(A) and perhaps even threatening
(B) and may even threaten
(C) and even a possible threat to
(D) as well as possibly threatening
(E) as well as a possible threat to
Ans B
請問C有何不可
C可與a a rise平衡
B選項中的causing是否破壞原平衡