A common-image of Hawaii is one of sunshine, palm trees, and blue-ocean waves. However, a mountain on the island of Kauai is the rainiest-place on Earth. It gets an awe-inspiring average of 460 inches of rain every year.

Which phrase uses a hyphen correctly?
1. common-image of Hawaii
2. blue-ocean waves
3. rainiest-place on Earth
4 awe-inspiring average​