PLEASE HELP ME OUT WITH THIS QUESTION PLEASE AND THANK YOU (science)

Why do skeletal muscles work in pairs?

One tightens and the othe relaxes to make the bones move.

Multiple muscles have to tighten to make joints move.

They cancel each other out.

Bones are resistant to movement.
(no guessing please☆)

2.Multiple muscles have to tighten to make joints move.

HOPE THIS HELPS IF THIS IS RIGHT CAN YOU MARK ME BRAINLIEST?

in this scenario it would be the consumer demand as most influential in making the decision. the band members need to figure out where and from whom they will make the most money, in other words who out of the two consumer groups - football fans or car drivers - will spend their money, who is more likely to contribute to their cause and buy what they are offering.

what words? are you talking about to complet what sentence