Research samples which are similar in their characteristics are identified as: (A) similar samples (B) matched samples (C) model samples (D) comparison samples Correct Ans: (B) Explanation:Researchers identify matched samples by pairing participants with similar characteristics. They select individuals with comparable traits like age, gender, or education level. By matching participants, they ensure that both groups are similar and unaffected by other variables. Other options, such as similar samples, model samples, and comparison samples, are not the same as matched samples. Researchers don’t use similar samples specifically for matching, model samples represent ideal groups, and comparison samples simply serve for comparison but don’t require matching characteristics.