user
Inside a burning house, this thing is best to make.  And best to make it quickly, before the fire's too much to take!
A: eu
B: haste
C: prairie
D: living space
E: colony
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

B

<|end_of_solution|>