Which was the 48th state to join the Union and does not follow Daylight Saving Time, except on its Navajo Reservation?

Which was the 48th state to join the Union and does not follow Daylight Saving Time, except on its Navajo Reservation?

• A. California
• B. New Mexico
• C. Idaho
• D. Arizona

Answer: (D)

Arizona became the 48th state to join the Union in 1912. It also has a unique approach to Daylight Saving Time: most of the state stays on standard time year-round, so clocks don’t advance in spring. The Navajo Nation, which sits within Arizona, does observe DST, so those areas switch clocks like neighboring states. This combination—the 48th state status and the DST exception on part of its land—explains why this state is the correct choice. California, New Mexico, and Idaho either aren’t the 48th state or don’t have that broad DST exception, so they don’t fit as well.