Mark the letter A, B, C, or D on...

Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
When heated to temperatures above 1250 degrees Centigrade, clay fuses and becomes pottery or stoneware.

A. melts together

B. steams up

C. breaks down

D. burns off