**Core Concept**
Active artificial immunization, also known as vaccination, is a process where a person is exposed to a weakened or inactivated form of a pathogen, thereby inducing a specific immune response. This type of immunization provides long-term protection against infections and is a crucial aspect of preventive medicine.

**Why the Correct Answer is Right**
Active artificial immunization is typically induced by the administration of vaccines, which can be classified into two main categories: live attenuated vaccines and inactivated vaccines. Live attenuated vaccines contain a weakened form of the pathogen, while inactivated vaccines contain a killed form of the pathogen. The administration of vaccines stimulates the immune system to produce antibodies and activate immune cells, such as T cells, which recognize and eliminate infected cells.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because the administration of antitoxins is a form of passive immunization, not active immunization. Antitoxins are antibodies that are administered to provide immediate protection against specific toxins, but they do not stimulate the immune system to produce long-term immunity.
* **Option B:** This option is incorrect because the administration of toxoids is a form of active immunization, but it is not the correct answer because toxoids are a type of vaccine. Toxoids are inactivated toxins that are used to stimulate the immune system to produce antibodies against specific toxins.
* **Option C:** This option is incorrect because the administration of immunoglobulins is a form of passive immunization, not active immunization. Immunoglobulins are antibodies that are administered to provide immediate protection against specific infections, but they do not stimulate the immune system to produce long-term immunity.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that active immunization is a key component of preventive medicine, and vaccines are available for a wide range of infections. When administering vaccines, it's crucial to follow proper vaccination protocols and schedules to ensure the optimal immune response.

**Correct Answer: A. Antitoxins. Antitoxins are administered to provide immediate protection against specific toxins, but they do not stimulate the immune system to produce long-term immunity.**