Which of the following statements about formal observation as an investigation technique are TRUE?

The true statements about formal observation are b and d. Formal observation is when a business analyst watches an individual or group perform their work. Statement (b) is true as observing the environment directly helps the analyst understand the physical business environment and how it influences the work. Statement (d) is true because observation is particularly effective for identifying tacit knowledge (unspoken or unwritten rules, shortcuts, or skills) that the worker may take for granted or find difficult to articulate during an interview. Statement (a) is false as observation is a passive technique, not suitable for actively negotiating or resolving conflicts, which is better suited for workshops or interviews. Statement (c) is false as observation does not actively engage a wide range of stakeholders to obtain buy-in.

(Reference: BCS Foundation Certificate in Business Analysis / BCS Business Analysis Practice – Investigative Techniques, Observation)