Classify the Following Definition According to Its Use: to Reduce

Short Answer

Classify the following definition according to its use: to reduce vagueness, to introduce or explain a new or unusual word, to evoke an attitude about something, or to accomplish some other purpose.
"Now if we set about to find out what... [a] statement means and to determine whether to accept or reject it, we would be engaged in thinking which, for lack of a better term, we shall call critical thinking."-
B.Othanel Smith