Answer:
B. to tell the audience how to choose books to read.
Step-by-step explanation:
it explains that students normally will choose books that teachers want them to read or that friends recommend then to read. In this short speech it it gives you a suggestion to use a technique called P.I.C.K. to make it easier for you to choose a book of your liking. Also in the whole short speech it talks about choosing books and none of the other options.
( I hope this helps you!)
:)