Answer:
A) All whole numbers from 0 to 10
Explanation:
The domain cannot exceed 10 because they do not have enough time to build more than 10 birdhouses. This rules our all nonnegative real numbers and all real numbers.
Integers include negative numbers as well, but it isn't possible to make -1 birdhouses, so this choice is wrong.
Therefore, the answer is all whole numbers from 0 to 10
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