Correct option is C
Correct spellings and meanings:
Chew – To bite and grind food with the teeth.
Necessary – Required or essential.
Indigetion Incorrect spelling → Indigestion – Discomfort or pain in the stomach after eating.
Properly – In the correct or right way.
The correct spelling of the word is indigestion, which means discomfort in the stomach due to difficulty in digesting food.
Correct Sentence:
To avoid indigestion, it is necessary to chew food properly.