What will happen and give a reason

1 - Don't put the coat on the snowman - it will melt him

2 - I don't think the coat will make any difference

3 - I think it will keep him cold and stop him from melting.

1 or 2 or 3

Explanation:

it depends whether the coat is a light or dark colour. if it is lighly coloured it will not absorb heat from the sun and wont melt the snowman. if it is darkly coloured it will be number 1

the coat wont make a difference if the temperature of the snowman is the same and the temperature outside the snoman and the sun isnt shining. the coat would just make him look smart - so number 2

it coul keep in the cold and block out the warmth so number 3