Question

when gathering glassware and equipment for an experiment, you should ---- clean any glassware that appears dirty. examine all glassware to check for chips or cracks. read all directions carefully to know what equipment is necessary. do all of these.

Explanation:

When gathering glassware for an experiment, cleaning dirty glassware, checking for chips/cracks, and reading directions for equipment use are all necessary safety and preparation steps. So the correct action is to do all of these.

Answer:

do all of these.