What in the building is very far from the ground floor?\nOptions:\n- basement\n- air\n- ceiling\n- water\n- sky
Please answer the following question by reasoning step-by-step.
ceiling
Ceiling is the upper interior surface of a room or other similar compartment.

Ceiling in a building is at the very top.

Ground floor is at the very bottom of the building.

Top is generally very far from the bottom in a building.

.

The answer is ceiling