Question

everything decays . books survive. change in complex sentence

Answer 1

Everything decays but the books survive

Answer 2

Everything decays but the book survives.

This is the correct answer of the above given question.

Complex sentence is a sentence in which there is both dependent clause and independent clause.

There are many types of sentences like simple sentences and integrative sentences in which a question mark is used at the end of the question.

So this is the correct answer.