Verified Answer :

Water makes a good coolant because it has a (A) high specific heat. The higher the specific heat, the slower it reaches the point of boiling. Thus, since its specific is very high, then it makes a good coolant because the moment it reaches it lowest point, the transition from cold to hot will be slower.

A good coolant must be able to absorb large amount of heat, must be cheap and easily available. we know that water has high specific heat which means that it can absorb large amount of heat in it. it is also easily available and cheap. This makes water a good coolant. So the correct choice is

a. high specific heat

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