The correct answer is C. Elders.
Suggestion is a powerful tool that can be used to influence the behavior of others. It is often used in education, marketing, and politics. Suggestion can be used to make people think, feel, or act in a certain way.
The chief source of suggestions in a person’s life is his or her elders. Elders are people who are older and wiser than the person. They have more experience and knowledge than the person. Elders can provide guidance and advice to the person. They can also help the person to learn from their mistakes.
Pupil of same age are also a source of suggestion but they are not the chief source. They are the people who are of the same age as the person. They can provide support and encouragement to the person. They can also help the person to learn from their mistakes.
Teachers are also a source of suggestion but they are not the chief source. They are the people who teach the person. They can provide knowledge and skills to the person. They can also help the person to learn from their mistakes.
None of these is not the correct answer.