Final answer:
The team is conducting a D)meta-analysis, a statistical method used to combine results from multiple studies to form comprehensive conclusions about a certain therapy's effectiveness.
Step-by-step explanation:
The research team combining the results of nearly two dozen studies to examine the effectiveness of dialectical behavior therapy in treating self-injurious behavior among clients with borderline personality disorder is conducting a meta-analysis. A meta-analysis is a statistical technique that integrates the results of multiple studies on a specific topic to draw more robust conclusions than a single study alone. This approach enhances the generalizability and applicability of the findings to a broader population.