Question

which question may be used to start your initial research about \global warming\?
a. how do you spell \global warming\? \tc. when did global warming first become a concern?
b. who is al gore? \t\td. none of these

please select the best answer from the choices provided

a
b
c
d

Explanation:

• Option a is a spelling question, not relevant to substantive initial research on global warming.
• Option b focuses on an individual advocate, not a core question about the topic itself for initial research.
• Option c addresses a foundational, topic-related question that can guide initial exploration of global warming's history and emergence as an issue.

Answer:

C. When did global warming first become a concern?