Comprehensive and Detailed Explanation From Exact Extract of AgentForce Documents:

According to the AgentForce Orchestration and Action Sequencing Guidelines in the official documentation, deterministic execution order is best achieved by using custom state variables and conditional logic rather than relying solely on LLM reasoning or topic instructions.

AgentForce’s orchestration framework allows developers to define variables that represent the successful completion of specific actions (e.g., “sessionsRetrieved,” “eligibilityVerified,” etc.). Subsequent actions can then include conditional filters that only allow execution if prior steps have been completed. This approach ensures that actions execute in a strict, logical sequence — preventing the LLM from reordering steps arbitrarily.

Option A (relying on topic instructions) provides guidance to the LLM but does not enforce execution order programmatically, which means errors can still occur if the reasoning engine interprets steps differently. Option C (priority and sequence indicators) assists in contextual selection but does not create dependency-based control between actions.

Therefore, per AgentForce best practices, the correct approach is Option B – using custom variables with conditional filters. This guarantees deterministic workflow sequencing, prevents premature action execution, and aligns with the “Action Dependency and Conditional Execution Model” described in the AgentForce Implementation Guide.