Power can be defined as the distance over which work was done. how much work can be done in a given time. all the work in a given area. the energy required to do work.

Power is defined as rate of work done or rate of energy

so here we can say that

so here correct answer must be

how much work can be done in a given time.

So we need to find the work done in a given period of time and then we will have to find the ratio of total work done and total time taken.

helium

oxygen

neon

sodium