Which definition best matches endurance?

• A. The act of giving up easily
• B. The duration of a process
• C. The starting speed of a process
• D. The ability or power to withstand stress or an unpleasant situation

Answer: (D)

Endurance is about staying power—the mental or physical ability to withstand stress or an unpleasant situation over time. It captures how much you can bear and keep going, not how long something lasts in itself, nor how fast you start, nor the act of giving up.

For example, a runner needs endurance to finish a long race, and materials have endurance when they remain strong under repeated stress. That sense of continuing through difficulty is what this word conveys.

The other options describe different ideas: the duration of a process refers to how long something lasts, the starting speed is about initial pace, and giving up easily is the opposite of endurance.