Question

articles milk is - useful food​

Answer 1

Answer:

Milk and dairy products are good sources of high-quality protein. Protein is important during weight loss and subsequent weight maintenance due to the high satiating effect which helps to prevent over-consumption of energy and thereby reduces body fat stores

Answer 2

Answer:

Milk is a useful food / drink.

Explanation: always use ( A ) before USEFUL

Because the pronunciation of this word is actually as a Vowel.