Which western state was the 48th to join the Union and does not follow daylight saving time except for the Navajo Reservation?

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

Answer: (C)

The key idea here is knowing which western state joined as the 48th and how it handles daylight saving time. Arizona is the 48th state, admitted on February 14, 1912. Unlike most states, Arizona generally doesn’t observe daylight saving time, keeping the same standard time year-round. The exception is the Navajo Nation, which lies across part of northern Arizona (and surrounding areas) and does observe DST, creating that notable exception within the state.

For context, New Mexico is the 47th state and does observe daylight saving time, Idaho observes daylight saving time, and Hawaii is the 50th state and does not observe daylight saving time.