Final answer:
Making sure the engine has the right amount of oil, properly adjusted v-belts, and avoiding high-speed driving can all help keep an engine cool in hot weather.
Step-by-step explanation:
All of the above options will help keep an engine cool in hot weather. Making sure the engine has the right amount of oil is important as it helps lubricate the moving parts and reduces friction, preventing excessive heat buildup. Properly adjusted v-belts ensure that the engine's cooling system components, such as the water pump and radiator fan, are functioning optimally. Avoiding high-speed driving can help minimize the strain on the engine and prevent overheating.