Which of the following artificial colouring agents is used in dietary supplements, sauces, soups and broths, bakery, dairy fats and oils, seafood, condiments, breath fresheners, desserts, convenience foods and beverages?

Quinoline yellow

The correct answer is Option (4) → Quinoline yellow

Quinoline yellow is a widely used artificial coloring agent approved for a variety of food and beverage applications, including the ones you listed: dietary supplements, sauces, soups, bakery items, dairy products, seafood, condiments, breath fresheners, desserts, convenience foods, and beverages.