Why are safety nets not 100% reliable?

• A. Fallible
• B. Infallible
• C. Unreliable
• D. Capable

Answer: (A)

Safety nets are fallible, meaning they can fail even when they're designed and used properly. In the real world, many factors can lead to a failure: wear and tear from repeated use, occasional damage or tears, improper installation or tension, aging materials, exceeding load limits, weather effects like wind or moisture, and human error in how they’re set up or used. Because of these potential issues, they can reduce risk but cannot guarantee catching every fall, so they aren’t 100% reliable.

If you think in terms of the other options, infallible would mean never failing, which isn’t realistic for physical equipment. Unreliable points to overall dependability, but the best descriptor for the inherent possibility of failure is fallible. Capable doesn’t address reliability at all.