lessen
hasten
expedite
worsen
Answer is Right!
Answer is Wrong!
The correct answer is D. worsen.
To ameliorate is to make something better or more bearable. The opposite of ameliorate is to make something worse or more difficult to bear.
A. lessen: to make something smaller or less in amount or degree.
B. hasten: to make something happen more quickly.
C. expedite: to make something happen more quickly or easily.
All of these words can be used in a variety of contexts, but in the context of the question, only worsen is the opposite of ameliorate.