Correct Answer: Methyl alcohol and H ₂ O.

Solution : The correct option is Methyl alcohol and H ₂ O.

Methyl alcohol (CH ₃ OH), usually known as methanol, is a kind of alcohol that may be used as an antifreeze in automotive radiators. It works as a coolant and antifreeze solution for the vehicle's engine when combined with water (H ₂ O) in the suitable ratio. In areas where extreme freezing temperatures can cause standard water-based coolants to freeze, possibly harming the engine, methanol-water combinations are widely employed. The combination reduces the freezing point of the coolant, keeping it from hardening in cold weather, and it also aids in the regulation of engine temperatures while in operation.