I agree with the person above - I'd say the correct answer is B. The greenhouse effect is changing Earth's atmosphere.
A is incorrect because the excerpt says that the atmosphere keeps the Sun's heat from leaking away into space. C is incorrect because it is the greenhouse effect that keeps the planet warm. D is not even mentioned in the text, which means that only B is correct.
The correct method of documenting a source using MLA format is "This technology was first introduced back in the seventies (Hamilton 83)," option B.
<h3>How to document a source in MLA style?</h3>
First, we must pay attention to whether or not the citation already contains the name of the author. If it does, there is no need to place the name in parentheses. Thus, we can eliminate options A and C.
Second, we must see if the page number is mentioned in parentheses. It should be placed after the author's name, without a comma separating them. Thus, we can eliminate option D.
With the information above in mind, we can choose option B as the correct answer, "This technology was first introduced back in the seventies (Hamilton 83)."
Learn more about MLA style here:
brainly.com/question/2960216
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