Wearing glasses will improve your seeing .But a teacher cant force you to wear them.Wear glasses if you can't see the book in front of you or if you can't see the school board.The teacher wants you to wear them so there is no excuse y u didn't do school work or dont understand it.
C) your stressed is the answer
The shoulders, arms, legs, and pelvic griddle are a part of the appendicular skeleton, while the skull, rib cage, hyoid bone, and vertical column are a part of the axial skeleton.
Frequency, Intensity, time and type