No, as correlation does not necessarily imply causation. For example, although the number of ice creams sold and the number of people that fainted may have a strong positive association, this does not mean that buying ice creams causes people to faint - they are both responding to the variable temperature: this is known as a common response.
Answer:
-7 2/3 + (-5 1/2) + 8 3/4 = -4 5/12
B, C, and D
Hope this helped:)