Answer: Gold

The Gold layer is the most commonly used by data analysts because it contains highly processed, refined, and aggregated data that is business-ready for analysis, reporting, and visualization. This aligns with the data analyst's role of deriving insights and making data-driven decisions. The community discussion strongly supports this with multiple comments (including the most upvoted ones) confirming B as the correct answer, citing that Gold layer stores aggregated data used for AI, reporting, and analytics. While data analysts might occasionally use Silver layer data, the Gold layer is specifically optimized for analytical workloads. Options A, C, D, and E are incorrect because data analysts do use these layers (contradicting A), they're not used equally (contradicting C), and Silver/Bronze layers contain less processed data that requires more transformation work before analysis.

Author: LeetQuiz Editorial Team