Energy is the ability to do work. All of the following describe work being done EXCEPT: Select one:

a.
blowing out a candle's flame

b.
holding a heavy bowling ball

c.
lifting a mug of hot chocolate

d.
wiping dust off a coffee table

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?