Which of the following is a limitation of literature reviews?

A literature review is a systematic or narrative synthesis of existing scholarly work designed to provide a comprehensive overview of a specific research area. While essential for establishing evidence-based practice, these reviews are often complicated by inconsistencies in study design and reporting. Identifying methodological flaws and publication bias is a critical component of assessing the reliability of the summarized findings. Rationale: A. Conflicting evidence due to insufficient sample sizes or a low quantity of trials is a characteristic of the underlying primary research rather than a direct limitation of the review process itself. While a review identifies these gaps, the primary goal of the synthesis is to aggregate what exists. It highlights the scarcity of data rather than serving as a structural weakness of the review methodology. B. Significant heterogeneity represents a major limitation because variations in participant demographics, clinical settings, and outcome measures make it difficult to draw a unified conclusion. When studies differ vastly in their statistical methods or data collection, a meta-analysis may become inappropriate or misleading. This lack of uniformity complicates the ability to generalize findings to a broader clinical population. C. Achieving a more wholesome view of a topic is considered a primary benefit or strength of a literature review rather than a limitation. By consolidating multiple perspectives and findings, the review helps eliminate information silos and provides a foundation for future research. This comprehensive nature is the main reason healthcare professionals rely on reviews for clinical decision-making. D. This choice is incorrect because only the presence of study variation serves as a functional limitation in this context. While reviews have multiple drawbacks, such as selection bias, not all statements provided describe a negative constraint. Identifying the specific logistical challenges of evidence synthesis is necessary to maintain a high level of scientific rigor in academic evaluation.