Answer the question

Which of the following is an example of heat transfer by conduction?
Select from:
+ a whole metal spoon getting hot when one end is in hot soup;
+ the inside of a car in the sun getting very hot;
+ a tar road getting hotter in the sun than a concrete sidewalk;
+ a fireplace fire heating a room on a cold day;
a whole metal spoon getting hot when one end is in hot soup