Incompletely composed question:
1) Energy is projected to increase an average of ___% per year.
A. 3.0%
B. 2.0%
C. 2.3%
D. 3.3%
The answer is B
Improved question:
2) World energy consumption is projected to increase per year on average for:
A. 1 %
B. 2 %
C. 4 %
D. 8 %
The answer is B
Because:
1. Missing specifics like “World” and “Consumption” in the Question
2. The answers (options) that are mentioned are close to each other (need "contrast")
3. The question could be better phrased