Pls me with a and a b. this is due tmrw so pls answer quickly!

What is the best thing for an applicat to do to prepare to write a cover letter

Scientists who study the anatomy of the systems in the human body focus their studies on

The dietary guidelines for americans recommend (a) avoiding smoking. (b) engaging in aerobic exercise for 60 minutes at least five days a week. (c) making all of your grain choices whole grains. (d) increasing your intake of fruits and vegetables.