Answer:<u> </u><u>The correct option is B:</u>
<em>Each year.CO2 level increases at a faster rate. Over the past 50 years, it has nearly doubled.</em>
In "<em>An inconvenient truth</em>", A1 Gore illustrates clearly how the levels of CO2 has been increasing rapidly in the atmosphere since 1958, and proves that the increasing of the carbon dioxide emissions are a result of human actions. He explains this theory by presenting the Keeling curve, which shows that the last 14 years were the hottest ever recorded in the atmosphere, as well as other important studies proving the correlation between global warming and hurricanes.
The correct answer for the question that is being presented above is this one: "A. the relationship between the elements of your thought." Parallel structure is used to make clear the relationship between the elements of your thought.
Here are the following choices:
A. the relationship between the elements of your thought
B. the high quality of your writing
C. the subordinate clause structure
