(1) do you enjoy being out in the fresh air? (2) does nature restore your spirits? (3) you might want to consider hiking as a hobby. (4) it's a hobby you can begin with very little expense. (5) all you need to start is a good pair of hiking shoes.

complete the sentence with the appropriate verb. how does the first sentence in the paragraph to the main idea?

a. explain
b. introduce
c. delay
d. specify