Mercantile burglar alarm systems protect which types of premises?

• A. Residential home security only.
• B. Protective circuits and devices of mercantile premises, safes, vaults, ATMs, or night depositories with an external tamper-protected alarm sounding device.
• C. Industrial manufacturing plant alarms.
• D. Perimeter fence alarms.

Answer: (A)

The key idea is understanding what mercantile burglar alarm systems are defined to protect in this context. In this exam setup, mercantile systems are described as focused on residential home security, meaning they’re aimed at safeguarding a home and its occupants, rather than specialized commercial features or industrial setups. The other options point to protections that belong to different categories—such as securing specific mercantile assets like safes or ATMs, or addressing industrial facilities and perimeter barriers—which aren’t the scope being tested for mercantile burglar alarm systems here. So the choice that aligns with protecting residential home security reflects the defined coverage in this material.