Step 1: Understanding the Concept:
The Indian Standards Institution (ISI) mark is a conformity mark for industrial and food products in India. Under the Food Safety and Standards Regulations, certain products require mandatory certification to ensure public health safety.
Step 2: Detailed Explanation:
Under the Bureau of Indian Standards (BIS) and FSSAI guidelines, mandatory ISI certification is required for products where quality lapses can pose severe health risks:
1. Baby foods (A): Infant milk substitutes, infant foods, and weaning foods require strict quality control and have mandatory ISI certification.
2. Packaged Drinking Water (C): All forms of packaged drinking water and natural mineral water must carry the ISI mark before they can be sold in the market.
3. Coffee powder (B): Pure coffee-chicory mixtures or certain soluble coffee powders are also subject to mandatory ISI certification under specified trade categories to prevent adulteration.
4. While wheat flour (D) and vegetable oils (E) are regulated by Agmark or FSSAI standards, they do not generally require mandatory ISI certification for basic retail.
Thus, the correct grouping is (A), (B), and (C).
Step 3: Final Answer
The correct option is (A).