Why is B correct? Why is C incorrect?

@Ryan-Mahabir, (B) is correct because it points out that the nearby orchard is the only suitable habitat for nesting doves in the area. Since it eliminates a possibility that the doves could nest elsewhere in the area, it strengthens the conclusion arguing that because the orchard is no long suitable, the doves no longer nest in the area as a whole. (C) is incorrect because it is irrelevant to the argument. The argument is about doves not blue jays, we cannot infer that blue jay nesting behavior is any way representative of the dove nesting behavior and draw any conclusions from it.

How does B reconcile the sprinklers with the birds nesting in the orchards? I was expecting the answer choice to connect these.