Answer:
A. He was concentrating hard on his book
I've always been taught that revising involves checking for spelling, punctuation, and grammar. Basically any kind of improvements. Is this one of those questions where you check all that apply? Revising also includes making sure you have stayed on topic and gives you the chance to remove things that may not really apply or add other things that may have been left out. It's where the writer truly polishes everything up.
I hope this helps.
Answer: give them more options for extracurricular activities, let them go out, have them walk to school, etc. it’s not hard to keep our young people healthy :)
Explanation:
