This question is incomplete because you are missing the options. Here are the options
A. hands
B. arms
C. bottom
D. legs
After adjusting your seat, your bottom should be as close as possible to the backrest.
When we adjust a chair to sit we must take into account some aspects to avoid discomfort in our legs, back, neck, arms, among others.
To prevent our back from bending, it is necessary to put our bottom as close as possible to the backrest so that our back is straight avoiding a discomfort.
Also the height of the chair/seat must be adequate so that our feet can rest on the floor and avoid sliding off the chair.
According to the above, the correct answer is C. Botton, because he mentions the part of the body that must be closest to the backrest to have an optimal position on a chair.
Learn more in: https://brainly.com/question/10656629
