When we use the “foot of the mountain”, we are comparing the low

When we use the “foot of the mountain”, we are comparing the lower part of the mountain to the foot of a human being. In this sense，the word “foot” conveys（ ）.
A、onomatopoeic motivation
B、morphological motivation
C、semantic motivation
D、etymological motivation
【正确答案】：C
【题目解析】：语义理据是指由词的概念意义所暗示的联想意义，解释了词的字面意义与比喻义之间的联系。