Final answer:
The Intensity/Duration Inverse Principle states that as exercise intensity increases, the time one can withstand the activity decreases. Hence option B is correct.
Step-by-step explanation:
The Intensity/Duration Inverse Principle states that there is an inverse relationship between exercise intensity and the duration one can sustain that intensity. As exercise intensity increases, the ability to maintain that level of intensity for an extended period typically decreases. Higher-intensity activities often require more energy and exertion, leading to quicker fatigue compared to lower-intensity, longer-duration exercises. This principle is relevant in exercise physiology and training programs, where balancing intensity and duration is important for achieving specific fitness goals and preventing overexertion or injury.