In fighting a fire in a fuel tank, the FIRST action you should attempt is to __________.

Correct Answer: Option A — secure all sources of fresh air to the tank

Securing all sources of fresh air is the primary step in fire suppression to starve the fire of oxygen. In a fuel tank, limiting air intake prevents the fire from intensifying and allows for the effective use of fixed CO2 smothering systems to extinguish the blaze safely.