user
I get trodded on every single day,I'm all different types of materials and am the lowest object on earth. What am I?
A: iron
B: dress
C: polish
D: im the floor
E: furnishings
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

D

<|end_of_solution|>