Define data saturation in qualitative research and explain how it guides sampling.

Define data saturation in qualitative research and explain how it guides sampling.

• A. Data saturation occurs when sample size reaches a fixed quota; guides power analysis.
• B. Data saturation is the point when additional data yields little new information; it guides sample size and stopping rules.
• C. Data saturation means every possible theme has been identified; guides theoretical saturation only.
• D. Data saturation is when researchers become tired; guides staffing.

Answer: (B)