Final answer:
The latitude of Arizona's Sonoran desert is 32 degrees because it falls within the range of subtropical deserts. These deserts are located on the downwind side of mountain ranges and receive less rainfall, qualifying as deserts.
Step-by-step explanation:
The latitude of Arizona's Sonoran desert is 32 degrees because it falls within the range of subtropical deserts, which exist between 15 and 30 degrees north and south latitude. These deserts are centered on the Tropic of Cancer and the Tropic of Capricorn. The Sonoran desert specifically is located on the downwind or lee side of mountain ranges, which create a rain shadow, causing it to receive less rainfall and therefore qualify as a desert.