What is a key distinguishing feature of Hawaii compared to other U.S. states?

Hawaii is unique among U.S. states as it is the only state that is entirely composed of islands. This characteristic sets it apart from all other states, which are located on the mainland continent. Being an archipelago, Hawaii consists of numerous islands, with the eight main islands being the most recognized. This geographical feature has significant cultural, ecological, and economic implications, such as its isolation affecting transportation, tourism, and natural resources.

In contrast, the other options do not accurately represent distinguishing characteristics of Hawaii. For instance, although Hawaii is mountainous, it is not the only state with significant mountain ranges; states like Colorado and Alaska also have prominent mountains. Additionally, Hawaii is not the northernmost state—that title belongs to Alaska. Furthermore, Hawaii is far from being the most populous state; California holds that distinction. Understanding these unique aspects of Hawaii helps in appreciating its cultural diversity and geographical significance within the United States.