What new point does the author make in the author make in the last paragraph a.) cities are taking steps to support all bikers

b.) you should replace cars with more bikes

c.) biking instead of driving in cities help people and our planet

d.) traffic and pollution problems can be fixed in cities

b

explanation:

bc its just b

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 would be kevlar ^^