The correct answer is C. In Agent Script, reasoning.instructions is processed before the final assembled prompt is sent to the LLM. Salesforce explains that procedural logic inside reasoning instructions executes top-to-bottom, prompt text is accumulated, and then the assembled prompt is sent to the LLM. Therefore, if the first instruction deterministically runs the account-tier and open-case lookup actions, those values can be collected before the LLM decides how to respond. Option A is wrong because the config block defines agent-level metadata, not guaranteed action execution. Option B is incorrectly worded and reverses the sequencing issue. For deterministic pre-response data gathering, procedural instructions at the start of reasoning.instructions are the correct pattern.