## **Core Concept**
The question pertains to the history of census data collection, specifically focusing on when disability was first included as a parameter. This involves understanding the evolution of census methodologies to encompass a broader range of human characteristics and experiences.

## **Why the Correct Answer is Right**
The inclusion of disability in census data represents a significant shift towards recognizing and addressing the needs of diverse populations. By 1995, there was a growing international awareness of the importance of disability data for policy planning, resource allocation, and monitoring progress towards inclusive development. This awareness was influenced by several factors, including advocacy efforts by disability rights groups and the development of frameworks for understanding disability.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not accurately reflect the year when disability was added to the census.
- **Option B:** Similarly, this option does not correspond with the correct year for the inclusion of disability in census data.
- **Option D:** This option is also incorrect as it suggests a different year that does not align with the actual inclusion of disability parameters in the census.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the inclusion of disability in censuses and surveys is crucial for monitoring and addressing the needs of people with disabilities. This data helps in policy formulation, resource allocation, and evaluating the accessibility of services and environments.

## **Correct Answer:** .