Step 1: Understanding the question
The question asks for the percentage decrease in explosive power over a period of one month. In such scenarios, the decrease is often attributed to factors such as physical fatigue, injury, lack of proper recovery, or overtraining.
Step 2: Analyzing the options
- (A) 30%: This is the most reasonable answer based on common research or results from explosive power reduction due to fatigue, overtraining, or reduced intensity over a period of one month. This is the correct answer.
- (B) 18%: This is less likely, as significant decreases in explosive power due to overtraining and insufficient recovery are usually more substantial.
- (C) 15%: While possible, a 15% decrease is typically not the norm for explosive power over a month, unless the decrease is gradual.
- (D) 32%: This would be a more extreme decrease, which is rare unless an athlete is severely injured or experiences extreme physical distress.
Step 3: Final Answer
Thus, the correct answer is Option (A): 30%.