Question

flammable materials, like alcohol, should never be dispensed or used near
○ an open door
○ an open flame
○ another student
○ a sink

Explanation:

Flammable materials like alcohol can ignite easily. An open flame provides the ignition source, so using/dispensing flammables near it is dangerous. Other options (open door, another student, sink) don't pose fire risk.

Answer:

B. an open flame