The answers that identifies the infinitive in the sentence.
you should start saving up ticket money now if you're planning to go to the concert.
a. to go
b. start saving
c. should start
d. are planning

William narrates the scene by describing characters actions.

1) if the main idea is to show the sequence of events, a cause-and-effect style of writing will be used.  2) if the main idea is to show why one product or idea is better than another, the basic points of each side will be compared and contrasted.  3) if the main idea is to present opposing viewpoints, the pros and cons of each side will be discussed.  4) if the main idea is to draw special attention to an important cause or event, various examples will be provided.  5) if the main idea is to define a certain term or concept, various examples and explanations will be provided.

C88.00 should be the answer