Which reporting tool enables the creation of ad hoc reports using BI subject areas?

The correct choice is BI Answers, which is specifically designed for users to create ad hoc reports using Business Intelligence (BI) subject areas. BI Answers provides a user-friendly interface that allows individuals to select dimensions, measures, and filters to generate reports tailored to their specific needs, enabling them to explore data and derive insights without extensive technical knowledge.

Smartview Integration is great for integrating BI content within Microsoft Office applications but is not primarily a report creation tool for ad hoc reporting. BI Composer allows users to create dashboards and presentations from BI data but focuses on templating rather than ad hoc query capabilities. eText report layout templates are used for formatting and outputting reports in specific formats but do not support the creation of ad hoc reports directly from BI subject areas.