When storing a firearm, what is important to prevent unauthorized access?

Storing a firearm in a locked compartment, disassembling it, or using a gun lock are all important steps to prevent unauthorized access. Option A provides an added layer of security by keeping the firearm in a separate locked compartment. Option B may not fully prevent unauthorized access as someone with experience could still reassemble the firearm. Option C may also not fully prevent unauthorized access as someone could potentially break the lock or have access to the key. Therefore, all of the above options provide important measures in preventing unauthorized access to a firearm.