Which statement best describes passive safety features vs active safety features?

Which statement best describes passive safety features vs active safety features?

• A. Passive safety features rely on natural forces to reduce risk without power, such as gravity-driven cooling and natural convection; Active features require power or external actions, such as pumps, valves, and backup generators.
• B. Passive safety features rely on external power to operate.
• C. Active safety features rely on natural forces.
• D. Passive and active safety features are the same.

Answer: (A)

The idea being tested is the difference in how passive and active safety features operate under fault conditions. Passive safety relies on natural forces to reduce risk without needing power or operator action, such as gravity-driven cooling or natural convection that move heat and coolant on their own. Active safety features, in contrast, require electrical power or external actions, like pumps, valves, and backup generators that must be powered or commanded to function. The described statement accurately contrasts these two modes: passive uses natural forces and no power, while active depends on power or external actions. The other options misstate the relationships—passive isn’t powered, active isn’t just natural forces, and they aren’t the same.

The idea being tested is the difference in how passive and active safety features operate under fault conditions. Passive safety relies on natural forces to reduce risk without needing power or operator action, such as gravity-driven cooling or natural convection that move heat and coolant on their own. Active safety features, in contrast, require electrical power or external actions, like pumps, valves, and backup generators that must be powered or commanded to function. The described statement accurately contrasts these two modes: passive uses natural forces and no power, while active depends on power or external actions. The other options misstate the relationships—passive isn’t powered, active isn’t just natural forces, and they aren’t the same.