The english language is select all that apply

What is the meaning of the word checking as it is used in this sentence from the second paragraph of the passage?

List some things you like to do with ur close friends and everyday friends(school)

Read this sentence: while on vacation, i often relax by reading one of myfavorite books, go to the movies, or swimming in the pool.which revision corrects the parallel structure error? a. while on vacation, i often relax by reading one of my favoritebooks, going to the movies, or swimming in the pool.ob. while on vacation, i often relax by reading one of my favoritebooks, going to the movies, or swim in the pool.oc. while on vacation, i often relax by reading one of my favoritebooks, i like to go to the movies, or go swimming in the pool.od. while on vacation, i often enjoy relaxing by reading one of myfavorite books, go to the movies, or swimming in the pool.