Aerobic exercise stimulates the heart rate and breathing rate to increase in a way that can be sustained for the exercise session. In contrast, anaerobic ("without oxygen") exercise is activity that causes you to be quickly out of breath, like sprinting or lifting a heavy weight.
The best answer here would be A. Make meetings with a support group a priority, and meet new people with shared interests.
She will need all the support she can get to stop her habit and stay off the drugs. She is under the care of her doctor so a support group with other people who are experiencing the same will help. Also meeting new people with shared interests will help her to know she isn't alone.
I think the correct answer is Menopause
A. The balance needed to hold a handstand without falling.
Skill-related fitness is something that your body needs to be trained to do and need focus to complete. The other answer options are your body's physical capability rather then something that takes skill and needs practice, such as balance.