Answer:
They would produce less fruit.
Explanation:
Because there are not any birds in a greenhouse it would be harder to pollinate the plants
The correct answer is B.
The solution to the stray cat problem is aggressive spay and neuter policies. This claim is both arguable and defensible because you can defend the claim by using documented spay and neuter policies saying that they work but you can also argue the claim by using the documented spay and neuter policies saying that they don't work.