Vaccination is a preventive measure used to protect individuals from infectious diseases. The correct option is 1, which states that vaccination involves injecting the body with materials that stimulate the body to produce antibodies.

When a person is vaccinated, they are given a weakened, inactivated, or a fragment of the disease-causing organism, called the antigen. This antigen introduces the body to a harmless version of the disease, triggering an immune response.

The immune system recognizes the antigen as foreign and produces specific proteins called antibodies. These antibodies bind to the antigen, neutralizing it and preventing it from causing harm. In addition to producing antibodies, vaccination also stimulates the production of memory cells. Memory cells "remember" the specific antigen, allowing the immune system to respond rapidly and effectively if the person is ever exposed to the actual disease-causing organism in the future.

It is important to note that vaccination does not involve the use of monoclonal antibodies (option 3) or antibiotics (option 4) to cure a disease. Monoclonal antibodies are laboratory-produced proteins that can be used for targeted therapy, while antibiotics are medications used to treat bacterial infections.