Introduction:
Taking care of our teeth is an essential part of maintaining good oral health. It involves various practices to prevent dental problems and keep our teeth and gums healthy. Let's explore the options given and identify the one that is not true for the care of teeth.

Options:
a) We should not chew the food
b) We should eat raw fruits and vegetables
c) We should brush twice a day
d) We should not eat too many sweets

Explanation:
To determine which option is not true for the care of teeth, let's analyze each option:

a) We should not chew the food:
This statement is not true. Chewing food is an important part of the digestion process and helps break down food into smaller pieces, making it easier to swallow and digest. Chewing also stimulates saliva production, which aids in the initial digestion of carbohydrates and protects teeth against acid attacks. Therefore, we should definitely chew our food properly.

b) We should eat raw fruits and vegetables:
This statement is true. Raw fruits and vegetables are excellent choices for maintaining good oral health. They are high in fiber, which helps stimulate saliva flow and cleanses the teeth. The natural sugars present in fruits are less harmful to teeth than processed sugars found in candies and sweets. Additionally, fruits and vegetables contain essential vitamins and minerals that promote healthy teeth and gums.

c) We should brush twice a day:
This statement is true. Brushing our teeth twice a day, in the morning and before bed, is crucial for maintaining good oral hygiene. It helps remove plaque, bacteria, and food particles that can accumulate on the teeth and gums throughout the day. Brushing also stimulates the gums and promotes blood circulation, keeping them healthy. Using a fluoride toothpaste and a soft-bristled toothbrush is recommended for effective brushing.

d) We should not eat too many sweets:
This statement is true. Consuming excessive amounts of sweets can lead to tooth decay and cavities. The bacteria in our mouths feed on the sugars from sweets and produce acids that attack the tooth enamel, leading to decay. It is important to limit the intake of sugary foods and beverages, and if consumed, it is advisable to rinse the mouth or brush teeth afterward.

Conclusion:
After analyzing the options, we can conclude that option 'A' is not true for the care of teeth. Chewing food is an essential part of the digestion process and should not be avoided. It helps break down food and stimulates saliva production, which is beneficial for oral health.

(A)