Final answer:
Person B is correct; removing the thermostat can cause hot spots in the engine, while a higher rated thermostat does not cause the engine to warm up faster.
Step-by-step explanation:
Considering the question about whether replacing a 180 degrees F thermostat with a 195 degrees F thermostat will cause the engine to warm up faster, or if removing the thermostat from an engine may cause 'hot spots' to develop, the answer is: B is correct. It is a misconception to think that a higher rated thermostat will cause the engine to warm up faster. The thermostat's temperature rating only determines at which temperature the thermostat will open to allow coolant to flow through the engine, thereby regulating the engine's operating temperature.
However, B's statement that removing the thermostat can cause hot spots is accurate. The thermostat plays a crucial role in evenly distributing coolant throughout the engine block to prevent hot spots, which can cause damage to the engine over time.