While reading previous studies, a student notices that some sources are opinion pieces…

While reading previous studies, a student notices that some sources are opinion pieces with weak evidence, while others are peer-reviewed empirical studies. Which of the following statements best explain why critical evaluation is necessary in a literature review? a. Not all sources are equally credible. b. Strong literature reviews assess the quality of evidence. c. Every published text should be treated as equally authoritative. d. Evaluating source quality improves the strength of the review. e. Literature reviewing is mainly about summarising without judgement. geoquad A. Statements a, c and e geoquad B. Statements c and e geoquad C. Statements a, b and d geoquad D. Statements a, d and e