what is the best definition of the term satire?

a. using humor and wit to reveal the strengths of someone or something.
b. using sarcasm, ridicule, or irony to expose the faults of someone or something.
c. using creative writing, and art to expose the faults of someone or something.
d. using research and evaluation to expose the faults of someone or something.

The best definition of the term satire is:

b. using sarcasm, ridicule, or irony to expose the faults of someone or something.