Which is the best example of substitution?

Movie producers begin making more comedies because they cost less to make than action films.

People walk out before the end of a movie because the acting and the plot are terrible.

People at the movie theater switch from popcorn to candy because popcorn has gotten too expensive.

More people begin going to matinee movies instead of night movies to save money on the tickets.

The best example of substitution are options C and D.

That is people at the movie theater switch from popcorn to candy because popcorn has gotten too expensive and more people begin going to matinee movies instead of night movies to save money on the tickets.

Explanation:

Substitution means to replace something or a person with another thing or person. It also restores symbols by other expressions. When popcorn costs more than another item in the movie theatre, people tend to go for the other options like over here it's candy.

Also, when show prices at a theatre are lesser at night than the ones throughout people replace the latter with the former. In simple words, they opt for the cheaper one.

both third and last paragraphs

Explanation:

People at the movie theater switch from popcorn to candy because popcorn has gotten too expensive.

More people begin going to matinee movies instead of night movies to save money on the tickets.