Explanation:

- Correct answer: Option 1 - Omega-3

- Nuts, vegetable oil, and fish are indeed rich in Omega-3 fatty acids, essential for heart and brain health.

- Option 2: Carbohydrates

- These are mainly found in foods like grains, fruits, and sugars. They are a primary energy source but not abundant in nuts, vegetable oil, or fish.

- Option 3: Minerals

- Nuts and fish contain some minerals, but vegetable oil generally does not. They are present but not the primary component of these foods.

- Option 4: Vitamins

- While nuts, fish, and vegetable oils contain some vitamins (like Vitamin E in nuts), they are not predominantly recognized for their vitamin content.