I would say negotiation.
Engaging and accepting just makes it seem like you're willing to do it just for your friends.
Avoiding (could be a choice but it) makes it seem like you don't want to hang out with them.
I think it’s A
I think so because the Synovial membrane acts as a lubricator, much like how oil lubricated the joints of the tin man. If the lubricants were removed, the friction would increase as there is no oil to decrease the friction and let the bones function properly
I think it is c or build muscle strength
Answer: because gas rise in upward
Explanation: