Answer:
Extension: Produced by the sartorius and quadriceps femoris group of muscles.
Flexion: Produced by the biceps femoris, semitendinosus, and semimembranosus muscles.
Explanation:
D. A consumer buys or trades to receive a commodity available for sale or exchange
It is normally 100-120 so it is the first option. I hope this helps you.
It would be A It does not state how much weight needs to be lost
