So basically they’re asking to put the sentences that describe the passages (like what’s in them and what you read) and then describe the whole thing.
The correct answer is 1: Illustration-example.
Illustrations and examples are introduced by the transition phrases such as "for instance" and "for example". Some other linking words for giving examples are "to illustrate", "namely", and "such as". These linking words do not necessarily have to be at the beginning of the sentence.
