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OpenStudy (anonymous):

which is a way to protect your skeletal and muscular systems from injury? A) Lift heavy objects quickly B) Avid excerise C) Carry at least 20 lbs in your backpack at all times D) carry heavy objects with your knees bent (i think its D)

OpenStudy (mathwizzard3):

Yes!

OpenStudy (pina_colada123):

u r correct!!!

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