How to identify an error in a outline

Which revision fixes the mistake in parallel structure in this sentence? ellie always enjoys performing in plays more than to go to the movies. a. ellie always enjoys to perform in plays more than going to the movies. b. ellie always enjoys to perform more in plays than going to the movies. c. ellie always enjoys to perform in plays more than the movies. d. ellie always enjoys performing in plays more than going to the movies.

Diego rivera was a famous artist from mexico. most of his paintings were murals. murals are paintings that are made directly on a wall. rivera thought that all people should be able to see beautiful art, not just people who could afford to go to museums. this is why he painted most of his murals on the walls of public buildings

Could someone me with this question?