PLS HELP!
Look at the opening paragraph of the excerpt:

(1) Dr. L. 0. Howard tells us that the mosquito rarely goes far from its birthplace. That must refer to the miserable degenerates they have in New Jersey, for these of the north offer endless evidence of power to travel, as well as to resist cold and wind.

How does the author introduce his idea in this paragraph?
The author introduces his idea by:

A. Referring to American mosquitoes in a negative way.
B. Suggesting another expert is giving false information.
C. Stating that Canadian mosquitoes are much stronger.
D. Contrasting his experience with the statement of another expert.