Question

after completing an experiment, all chemical wastes should be

left at your lab station for the next class

disposed of according to your instructors directions

dumped in the sink

taken home

Explanation:

In a lab setting, chemical waste disposal must follow safety protocols. Leaving at the station, dumping in the sink, or taking home are unsafe/non - compliant. Following instructor's directions ensures proper, safe disposal.

Answer:

B. disposed of according to your instructor's directions