Use reasoning to lead to the answer of the following question:
Some envy children's bliss, meanwhile some children wish they were what so they could do anything they want?\nOptions:\n- old people\n- parents\n- the president\n- grown ups\n- play with toys

grown ups
Grown ups can do anything they want.

Children wish to be grown ups.

Every child turns into a grown up.

.

The answer is grown ups