Identify the Tools: The Developer's Bug Hunt

A case from a backend developer. Plagued by an error of unknown cause, he sorted 2 weeks of error logs by time slot and found the rule that the errors clustered only between 9 and 10 a.m. every Monday. Next he built a minimal reproduction environment with only the login-handling part carved out of the whole system, and when he poured connection requests in all at once—like a Monday morning—the same error reproduced exactly.

Choose the most accurate combination of thinking tools this developer used. (13 tools: Observing, Imaging, Abstracting, Recognizing Patterns, Forming Patterns, Analogizing, Body Thinking, Empathizing, Dimensional Thinking, Modeling, Playing, Transforming, Synthesizing)