Explanation:

- Option 1: Coal

- Known as "buried sunshine" because it is formed from plant material that once absorbed sunlight.

- Represents stored solar energy from millions of years ago.

- A key fossil fuel used for energy production.

- Option 2: Bauxite

- The principal ore of aluminum.

- Doesn’t relate directly to solar energy or the term "buried sunshine".

- Option 3: Mica

- A mineral often used in electronics and cosmetics.

- Has no connection with being referred to as "buried sunshine".

- Option 4: Iron

- A metal used in construction, machinery, and more.

- Not linked to sunlight or being called "buried sunshine".