Which statement is true concerning the storage of pressurized paint cans?

The statement regarding storing pressurized paint cans with the nozzle removed is correct because removing the nozzle helps to prevent accidental discharge and reduces the risk of the can leaking or becoming damaged. Pressurized containers can be hazardous if not stored properly, and keeping them securely stored minimizes potential dangers such as explosions or spills.

The other options present practices that are generally not recommended. For instance, while it is important to store spray cans at a safe temperature, storing them above certain temperature thresholds can still pose risks, making option about temperature not entirely appropriate as a safe practice standard. Keeping paint cans in the passenger compartment of a vehicle is particularly hazardous since fluctuations in temperature and movement can pose risks. Similarly, empty pressurized cans should not be discarded in regular trash as they can still pose a hazard and should be disposed of according to local hazardous waste regulations.