Final answer:
The question discusses a fire extinguisher that requires manual pressure application, but it is about CO₂ extinguishers and how temperature affects the pressure inside, with the critical temperature of CO₂ being 31 °C or 304 K.
Step-by-step explanation:
The question refers to a type of fire extinguisher that operates by manual pressure application to force the extinguishing agent out of the nozzle. However, none of the options directly describes a manually pumped extinguisher. Instead, the detailed answer discusses the behavior of CO2 fire extinguishers under different temperatures and the associated pressure changes within the canisters. When a CO2 fire extinguisher is exposed to high temperatures, such as the one described in a closed automobile, the internal pressure increases due to the expansion of the gas. The critical temperature of carbon dioxide is significant because it's the temperature above which CO2 cannot be liquified regardless of the pressure applied. This critical temperature is 31 °C or 304 K.