单选题 The old musician decided to move to her country home______her advanced age and poor health.
A. with regard to B. by virtue of C. on account of D. at the verge of

【正确答案】 C

【答案解析】[解析] 四个选项的意思分别是：with regard to关于。by virtue of依靠，由于。on account of由于，因为。on/to the verge。of接近，濒临。根据句意，应该选择C。