Final answer:
The youngest island in the group would be the one that is still experiencing volcanic activity or has formed recently, while the oldest island would be the one that has undergone significant erosion over millions of years.
Step-by-step explanation:
To analyze which island in the group is the youngest and which is the oldest, we can consider the process of island formation. Generally, islands are formed through volcanic activity. Therefore, the youngest islands in the group would be those that are still experiencing volcanic activity or have formed recently.
For example, Hawaii is a group of islands formed by volcanic activity. The youngest island in the group is the Big Island of Hawaii, which is still an active volcano. On the other hand, the oldest island in the group would be Kauai, which is no longer volcanically active and has undergone significant erosion over millions of years.
So, based on the volcanic activity and erosion, we can determine that the youngest island in the group is the one that is still actively formed through volcanic activity, while the oldest island is the one that has undergone significant erosion.