The element that can act like a metal when it is under tremendous pressure and is probably responsible for jupiter and saturn's magnetism is

Hydrogen is that element that can act like a metal when it is under tremendous pressure and is probably responsible for Jupiter and Saturn's magnetism as it is abundantly found on these Jovian planets.

Explanation:

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.

i'm on my way to history not a mistory.