The primary reason for interviewing operational management during engagement planning is to understand the objectives of the area or process under review. This ensures that the audit aligns with business goals and assesses the relevance of internal controls.

Validating the engagement work program (A) occurs later in the planning process.

Assessing management’s knowledge of risks and controls (C) is important but not the primary purpose of interviews.

Reviewing past action plans (D) is relevant for follow-up audits, not initial engagement planning.