Awoman currently gets out of breath while casually walking one mile in 30 minutes. she wants to improve her fitness level.

what is an appropriate short-term goal for her?

to walk a mile in 8 minutes by the end of the week without getting out of breath

to walk a mile in 25 minutes within two weeks without getting out of breath

to walk three miles in 25 minutes by the end of the week without getting out of breath

to walk a mile in 35 minutes within a year without getting out of breath