From his ________ voice on the phone I know everything is going under way

From his ________ voice on the phone I know everything is going under way

A.satisfactory

B.satisfying

C.satisfied

D.satisfaction

答案及解析： C

解析：

声音voice能体现人的情感。satisfied意为“感到满意”，符合题意。satisfying意为“令人感到满意”，多说明某物或某事。