Which of the following methods are used to help provide heat to the passenger cabin? Select all that apply. Coolant-fed heater core Solar heat panels Heat pump system Positive temperature coefficient heater

The coolant-fed heater core is a classic choice for warming up your vehicle's passenger cabin! It works by circulating hot engine coolant through a series of tubes, where the heat is radiated into the cabin air. Think of it as your car's way of sharing the warmth from that hard-working engine! Another fabulous contender is the heat pump system, especially popular in electric vehicles. This clever gadget can both heat and cool the cabin efficiently. It extracts heat from the outside air—even when it’s chilly outside!—and transfers it inside. It's like bringing a little sunshine into the cabin, no matter the weather!