**Core Concept**
The World Health Organization (WHO) periodically updates its classification and measurement of disability to better reflect the complexities of health and disability. The latest classification aims to provide a more nuanced understanding of health and function, enabling more accurate assessment and support for individuals with disabilities.

**Why the Correct Answer is Right**
The International Classification of Functioning, Disability and Health (ICF) is the latest framework developed by the WHO to classify and measure disability. It takes a biopsychosocial approach, considering both the health condition and its impact on the individual's functioning and participation in society. The ICF categorizes health and functioning into two components: body functions and structures, and activities and participation. This framework allows for a more comprehensive understanding of disability and enables healthcare professionals to develop targeted interventions.

**Why Each Wrong Option is Incorrect**
**Option A:** The ICF is a more recent development than the International Classification of Diseases (ICD), which is primarily used for disease classification. While the ICD does have a section on disability, it is not the primary framework for measuring disability.
**Option B:** The WHO Disability Assessment Schedule (WHODAS) is a tool used to measure disability, but it is not a classification system like the ICF.
**Option C:** The Global Burden of Disease (GBD) study provides estimates of disease and disability, but it is not a classification system.

**Clinical Pearl / High-Yield Fact**
The ICF is a crucial tool for healthcare professionals to understand and address the complex needs of individuals with disabilities. It emphasizes the importance of considering both the individual's health condition and their functioning and participation in society.

**Correct Answer: C. International Classification of Functioning, Disability and Health (ICF)**