Question

Which activity is least beneficial for a healthy respiratory system? walking around the mall walking the dog riding your bike reading a book

Answer 1

D. reading a book

Step-by-step explanation:

Answer 2

A healthy amount of exercise helps to maintain a healthy respiratory system. Therefore, the answer is D. reading a book

you can also use test taking skills when answering this question by concluding that reading a book is most different from the other choices that involve exercise.