## **Core Concept**
The World Health Organization (WHO) has a long-standing commitment to achieving health for all, which is a fundamental principle of primary health care. This initiative emphasizes the importance of equitable access to health services worldwide. The concept of "Health for All" was formally introduced in a significant declaration.

## **Why the Correct Answer is Right**
The correct answer, , corresponds to the year 1978. This was when the World Health Organization, along with the United Nations Children's Fund (UNICEF), sponsored an international conference in Alma-Ata (now Almaty), Kazakhstan. The Alma-Ata Declaration of 1978 marked a pivotal moment in the history of public health by calling for "Health for All by the Year 2000" and emphasizing primary health care as the key to achieving this goal. The conference recognized that health is a fundamental human right and that achieving a level of health that permits all people to lead a socially and economically productive life is essential.

## **Why Each Wrong Option is Incorrect**
* **Option A:** - This option is incorrect because 1980 is not associated with the announcement of "Health for All" by the WHO.
* **Option B:** - This option does not correspond with any major announcement related to "Health for All."
* **Option D:** - This option is incorrect because 1990, while relevant to various health initiatives, is not the year when "Health for All" was announced.

## **Clinical Pearl / High-Yield Fact**
A crucial point to remember is that the Alma-Ata Declaration of 1978 was a landmark event that laid the groundwork for global health policies, particularly in emphasizing primary health care as a means to achieve "Health for All." This concept continues to influence global health strategies.

## **Correct Answer:** .