How are pseudoscience and science most alike?
a. they both support their positions with evidence
b. they both provide explanations of phenomena
c. they both use unbiased, empirical data
d. they both test their claims using experiments

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.

it becomes positively charged by charging it