Newton's 3rd law states that every action, there is an equal and _ reaction?
please anyone who is truly good at physics i really need your help.

Opposite

Explanation:

According to Newton's third law of motion, it states that for every action, there is an equal and opposite reaction. This implies that when you exert a force of 400 N on an object, it will react by giving an equal -400 N to counter the oncoming force. Notice that the equal force is negative to mean it's opposite of the action.

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.