I think the three components are: environment, personal choices, and habits.
Answer:
Subtract your age from 220 to get your maximum heart rate. Calculate your resting heart rate by counting how many times your heart beats per minute when you are at rest, such as first thing in the morning.
The body shivers, shivering is something your body does in oder to keep warm. It is moving the muscles around, and trying to heat you up.
According to a quick g-o-o-g-l-e search, D. Reflexology, seems to be the correct answer!
In short, reflexology is a type of massage that involves applying varied amount of pressure to the feet, hands, & ears.
Hope this helped!
(If I'm wrong, please let me know in the comments)
I would say the answer is D.
A lot of kids at party's drink heavily, Some don't drink and others drink moderatly