Question

which safety precaution is emphasized regarding the use of glassware in the lab? use caution as glassware can shatter and cut skin. dispose of glassware after use. always wear gloves when handling glassware. never use glassware for measuring liquids.

Explanation:

When using glassware in a lab, the main safety concern is its fragility. Glassware can shatter easily, and broken glass can cause cuts. The first option directly addresses this key safety aspect. The second option about disposal is a general lab practice but not the emphasized safety precaution regarding the use (as it's about post - use). The third option of always wearing gloves is an over - generalization (e.g., in some cases like using clean, intact glassware for non - hazardous substances, gloves might not be strictly necessary). The fourth option is incorrect as glassware (e.g., volumetric flasks, burettes) is commonly used for measuring liquids in labs.

Answer:

Use caution as glassware can shatter and cut skin.