**Core Concept**
Active immunity is a type of immunity where the body produces antibodies in response to direct exposure to an antigen, such as through infection or immunization. This results in long-term immunity against future infections.

**Why the Correct Answer is Right**
Active immunity is not acquired by passive means, such as through the transfer of pre-formed antibodies from one individual to another, either through mother to child during breastfeeding or through administration of antibodies in the form of immunoglobulin. This type of immunity provides temporary protection and does not stimulate the body's own immune system to produce antibodies.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided, so we cannot evaluate its correctness.
* **Option B:** Not applicable, as the correct answer is not listed.
* **Option C:** Not applicable, as the correct answer is not listed.
* **Option D:** Not applicable, as the correct answer is not listed.

**Clinical Pearl / High-Yield Fact**
It is essential to note that passive immunity can be lifesaving in emergency situations, such as in the case of severe infections or allergies. However, it does not provide long-term protection and should not be relied upon as the primary means of preventing disease.

**Correct Answer: D. Passive immunization does not stimulate the body's own immune system to produce antibodies.**