📊 Research Methodology (RM)
Q. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ studies involve the collection of data from a sample at different points in time.
  • (A) Cross‐sectional study
  • (B) Longitudinal study
  • (C) experimental study.
  • (D) none
💬 Discuss
✅ Correct Answer: (B) Longitudinal study

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