The process by which words rise from humble beginnings to posit

The process by which words rise from humble beginnings to positions of importance is（ ）of meaning.
A、narrowing
B、extension​
C、elevation
D、degradation
【正确答案】：C
【题目解析】：本题考查词义的升格。词义的升格指词语从一开始的卑微的地位提升到重要地位的过程。narrowing：词义的缩小；extension​：词义的扩大；elevation：词义的升格；degradation：词义的降格。故Ｃ选项符合题意。