The spoiled child's playroom was massive, but only one of many rooms in the what?\nOptions:\n- big house\n- nursery school\n- preschool\n- building\n- retirement home
Step-by-step reasoning process below:
big house
A big house has many rooms.

Massive rooms can be found in a big house.

Big house can have a child's playroom.

.

So, the final answer is big house