The correct answer is option 1, 2, and 4 because the Food Safety and Standards (Packaging and Labeling) Regulations, 2011, mandate that prepackaged foods in India must clearly display the list of ingredients, nutritional information, and whether the product is vegetarian or non-vegetarian on the main label. This requirement ensures transparency and helps consumers make informed choices regarding their food, which is crucial for public health and safety, especially for individuals with dietary restrictions or allergies. However, while allergies must be addressed, specific recommendations from the medical profession are not mandated to be mentioned on the label.