I'll give you a question, please answer with step-by-step reasoning process.
Dry and cracked heels are found on?\nOptions:\n- boot\n- the desert\n- loaf of bread\n- foot\n- hock

foot
Heel is the end of a foot.

Foot is the end of the leg.

End of leg often gets dry and cracks in harsh environments.

.

The answer: foot