Which of the following is an example of heat transfer by conduction?
a. sunlight hitting a floor
b. an electric stove heating an iron pan
a wood stove heating nearby objects
d. an electric heater heating air, which rises
and is replaced with cooler air

The one that illustrates heat transfer via conduction would be:

B). An electric stove heating an iron pan.

Thus, option B is the correct answer.

Learn more about 'Conduction' here:

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B. An electric stove heating an iron pan

Explanation:

Conduction is the process in which heat is being transferred between objects through direct contact. It's the most common type of heat transfer.

An example of conduction is an electric stove heating an iron pan. The iron pan is placed on the stove. As we turn on the stove, it begins heating the pan. Since they are touching, the heat is being transferred from the stove to the pan through conduction.

In the rest of the scenarios, there is no direct contact.

This is why option B is the correct one.