A collaborative approach is a type of elicitation approach that involves working with multiple stakeholders simultaneously to elicit, analyze, and validate requirements. A collaborative approach can help to complete requirements elicitation activities in a short period of time, as it can:

Reduce the number of individual meetings and interviews that need to be conducted

Increase the quality and quantity of information that can be gathered from different perspectives and sources

Enhance the communication and understanding among the stakeholders and the BA

Promote the consensus and agreement on the requirements and the solution scope

Identify and resolve any conflicts, issues, or gaps in the requirements

Some examples of collaborative elicitation techniques are:

Requirements workshops: A structured and facilitated session that brings together a group of stakeholders to elicit, analyze, and prioritize requirements

Brainstorming: A technique that generates a large number of ideas or solutions from a group of stakeholders in a creative and spontaneous manner

Focus groups: A technique that collects the opinions, preferences, and feedback of a group of stakeholders on a specific topic or issue

Prototyping: A technique that creates a simplified or partial version of the solution to elicit, demonstrate, and validate requirements

The other options are not correct because they are not types of elicitation approaches, but rather techniques that can be used within an elicitation approach. An experiment is a technique that tests a hypothesis or an assumption by observing the results of a controlled or simulated scenario. An estimation is a technique that approximates the size, cost, duration, or effort of a project or a solution. A research is a technique that collects and analyzes information from existing sources, such as documents, reports, databases, etc.

References:

[BABOK Guide v3], Section 4.2: Conduct Elicitation, p. 100-101

Types of Elicitation Techniques for the Business Analyst, Blog Post, September 2018

Elicitation Techniques Used by Business Analysts – Tips and Guidance, Blog Post, July 2023