**Core Concept**
The "Health for All by 2000 A.D" initiative, launched by the World Health Organization (WHO) in 1978, aimed to achieve a significant improvement in the health status of populations worldwide, especially in developing countries. The goal was to ensure that all people have access to a level of health that allows them to reach their full potential and live a socially and economically productive life. However, it did not imply that all people would be completely healthy by a specific date.

**Why the Correct Answer is Right**
The correct answer, option A, is incorrect because the "Health for All by 2000 A.D" initiative did not promise that all people would be completely healthy by 2000 A.D. Instead, it focused on providing access to healthcare services, improving health outcomes, and reducing health inequalities. The initiative recognized that health is influenced by various factors, including socioeconomic conditions, environmental factors, and access to healthcare services.

**Why Each Wrong Option is Incorrect**
**Option B:** This statement is somewhat true, as the initiative did aim to ensure that all people are accessible to health care services. However, it was not the primary goal of the initiative.
**Option C:** This statement is true and aligns with the overall objective of the "Health for All by 2000 A.D" initiative.
**Option D:** This statement is also true and reflects the initiative's aim to promote health equity and reduce health disparities between countries.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the "Health for All by 2000 A.D" initiative was a strategic plan to improve health outcomes and reduce health inequalities, rather than a promise of complete health for all individuals.

**✓ Correct Answer:** A. All people will be healthy by 2000 A.D