Its true that water pumps a.) use engine oil as a lubricant and coolant b.) are driven by the engine crankshaft or camshaft c.) only work at idle and low speeds; they're disengaged at higher speeds d.) disengage during freezing weather to prevent radiation failure

It is true that water pumps

a) use engine oil as a lubricant and coolant.

Explanation:

Water pumps are called coolant pumps, the use of engine oil as a lubricant and coolant helps to stop the leakage and preventing from overheat. It is true that water pumps use engine oil as a lubricant and coolant.

Engine oils are more effective for water pumps, they provide low fluid solubility. It helps the water pumps to have the right balance of coolant flow rate.

the lubrication for a water pump is used on how special it is and the oil helps in constant circulation of the coolant flow to prevent the overheat and keep it cool at all time.

the clapeyron equation (also called the clausius-clapeyron equation) relates the slope of a reaction line on a phase diagram to fundamental thermodynamic properties.

explanation: