Which statement best describes the role of multiple data sources in supporting eligibility decisions?

• A. They provide redundant information
• B. They enhance validity by triangulation
• C. They limit interpretation
• D. They complicate decision making

Answer: (B)

Collecting information from multiple data sources supports eligibility decisions by triangulating evidence to improve validity. By drawing on observations, tests, records, and input from families or teachers across different settings, you cross-check findings and reduce the influence of any one measure's noise or bias. When the data converge, confidence in the eligibility conclusion increases; when they don’t, it signals that more data or a different lens is needed. Relying on redundant information would not enhance validity, and trying to interpret a single source in isolation can mislead, whereas integrating diverse sources provides a fuller, more trustworthy basis for making decisions.