Read the paragraph from the introduction [paragraphs 1-3].
Global warming is the heating up of
Earth's climate. It is also called climate
change. Scientists think that it comes
from the fuel that people use. People
burn these fuels to make energy. Many
things from cars to lights run on this
energy.
What is the main idea of the paragraph?
A Global warming is caused by the fuels people
B global warming is causing earth to run out of fuel
C earth’s climate can get very hot
D earth’s climate changes during the year

The correct answer is A. Global warming is caused by the fuels people.

Explanation

According to the paragraph, it can be inferred that its main idea is "A. Global warming is caused by the fuels people" cause the author first expresses the problem of global warming by saying that "Global warming is the heating up of Earth's climate. It is also called climate change "and later states the cause of this problem by saying that" Scientists think that it comes from the fuel that people use. People burn these fuels to make energy. Many things from cars to lights run on this energy ". Therefore, it can be said that the correct answer is A.

answer: do

the 'italicized phrase' is a noun clause that is used as a direct object.