Question

if a laboratory fire erupts, immediately...
○ notify your instructor
○ run for the fire extinguisher
○ throw water at the fire
○ open the windows

Explanation:

In a laboratory, safety protocols prioritize alerting an instructor first in case of a fire. Running for a fire - extinguisher without informing may lead to improper handling. Throwing water can be dangerous as some laboratory fires (e.g., involving flammable liquids) are not extinguished by water. Opening windows can fan the flames.

Answer:

Notify your instructor