Under United States law, all applicants for non-immigrant visas are viewed as “intending immigrants” until they can convince the consular that they are not. This means the consular officer will assume that you intend to move to the United States permanently, and you must demonstrate that this is not your intention. You are a non-immigrant. You must be able to show that your reasons for returning to your home country are stronger than the reasons for remaining in the United States, and that you intend to depart the United States at the conclusion of your studies.
“Ties” to your home country are the things that connect you to your hometown, homeland, or current place of residence. Your ties could be your job, family, owning a house or apartment, financial prospects that you own or will inherit, investments, etc.
If you are a prospective student, the interviewing officer may ask about your specific plans or promise of future employment, family or other relationships, educational objectives, grades, long-range plans and career prospects in your home country. Each person’s situation is different, of course, and there is no magic explanation or single document, certificate, or letter which can guarantee visa issuance.