Much to the delight of the students, the faculty decided to enrich the curriculum by adding art to Tuesday mornings and music to Thursday afternoons. Which part of the sentence contains an infinitive?

The man took strong sharp sudden bites, just like the dog. the figurative language in this excerpt serves to a. give the convict animalistic qualities. b. provide a relatable example of how the convict ate. c. set a scary mood. d. use alliteration to catch the reader's attention.