The work done in lifting 1 kg mass to a height of

9.8 m is about

The work done in lifting an object is stored as its potential energy.

Mass of object $m = 1$ kg

Height upto which it is lifted $h = 9.8$ m

Hence work done $W= m g h = 1 \times 9.8 \times 9.8 = (9.8)^2 J$

Thus option C is correct.