Answer:
A. Once you realize these standards are not for you, they are easy to ignore.
Explanation:
All the other answers don't make any sense and this answer fits perfectly. Once you realize that the standards pushed by modern media are unrealistic and unreasonable, you will start to accept yourself as you are and stop trying to change to fit the standards pushed by modern media.
I would just say squats, if there are no options.
It is an example of behavior boundaries,
Vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation.