The author introduces the main idea in the paragraph by stating that Canadian mosquitoes are much stronger, option A, as he claims they endure the cold.
What is a main idea?
As the name suggests, the main idea of a paragraph is the most important idea developed in it. When we read the paragraph that appears in the attached picture, we see that the main idea surrounds how strong Canadian mosquitoes are.
It is true that the author is defying the opinion of an expert and referring to American mosquitoes in a negative way. However, those ideas are used only to develop the main one. What he wants to do is contrast the mosquitoes in order to show that the Canadian ones are extremely strong - to the point of traveling long distances and enduring the cold.
With that explanation, we can choose option A as the answer concerning how the author develops the main idea.
Learn more about main ideas here:
https://brainly.com/question/1119015
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