The task of building the pyramid obviously required a huge workforce. which detail best supports the main idea?

Yes, just because one had a disability doesn't change the meaning of the word. they would most likely have an (whatever language) sign language to sign what's going on. it would be the same even if he was blind.

The last one is right

“the first decision that led to brutus’ downfall is when he decided that he would join the conspirators in their plot to kill caesar. the plot did not work. the conspirators had to flee for their very lives. the second decision that led to brutus’ downfall is when he refused to listen to cassius. “ i hope this information you.