Waste and sharps containers must be sealed once they are — full.

• A. 1/2
• B. 3/5
• C. 4/5
• D. 3/4

Answer: (D)

The main idea is ensuring safe containment by sealing containers at a controlled fill level to prevent exposure and spills during disposal. Sealing a waste or sharps container when it is three-quarters full gives enough headspace to close it securely without forcing the lid or risking leaks. This level helps maintain the container’s integrity during handling and transport, and reduces the chance of contents spilling if the container is bumped or moved. Sealing too early (half full) would mean disposing of containers more often than necessary; sealing too late (nearly full) increases the risk of leakage or puncture when sealing or moving the container. Therefore, three-quarters full is the appropriate threshold.