The correct answer is annoy.
A. make rigid
The correct answer is (D) To annoy; to irk; to raise or arouse anger or resentfulness in; to irritate.
Rile comes from U.S. roil (to stir, make muddy), French ruiler (mix mortar)
Examples of use:
- Her supervisor's unfair comments riled her so much that she left.
- He was riled by what he saw and heard.