1) the purpose of a book report is to a book.
a) argue
b) express
c) refute
d) explain
e) persuade

2) “if people do not stop harvesting so many octopi from the ocean, they might become extinct,” said dr. paul cephal. this is an example of a(
a) detail
b) description
c) opinion
d) fact
e) genre

3) “octopi are very secretive.” this sentence is an example of a(
a) source
b) description
c) inference
d) opinion
e) fact

For question number one (D) the purpose of a book report is to explain a book. So option D is your answer. Because when you write a book report you are including details from the book and examples generally speaking you normally write book reports to teachers to prove that you read a book therefore you are explaining what happened in the book.
For question number two (C) this statement is an example of an opinion. However it may seem scientifically correct that is still an opinion because it does not have Facts and it does not have evidence. Also pay attention to in the statement where it says “might “that is not a definitive statement saying yes they will so therefore this is the doctors opinion.
For question number three (B) this is a description of octopi and their behaviors and mannerisms.