IDNStudy.com, kung saan ang mga eksperto at komunidad ay nagtutulungan para sagutin ang iyong mga tanong. Ang aming platform ng tanong at sagot ay idinisenyo upang magbigay ng mabilis at eksaktong sagot sa lahat ng iyong mga tanong.
Answer:
A. knees
Explanation:
To help prevent back pain and injury when you bend and lift: Spread your feet apart to give your body a wide base of support. Stand as close as possible to the object you are lifting. Bend at your knees, not at your waist or back. Tighten your stomach muscles as you lift the object up or lower it down.