Which of the following is a way to gather requirements from external sources?

Gathering requirements from external sources is essential in understanding the context and needs that influence the project. Market research stands out as a robust method for collecting this type of information. It involves systematically gathering, recording, and analyzing data about the market, including customer preferences, competitor analysis, and industry trends. By doing so, it helps identify external demands and expectations that may shape the requirements of a project.

While internal stakeholder interviews, project review meetings, and team brainstorming sessions are valuable techniques for collecting information from within an organization, they do not provide insights from external sources. Internal perspectives can offer insights into the organization's current situation and capabilities but may miss the broader context external influences provide. Market research, on the other hand, is specifically designed to capture these external requirements, making it a crucial approach for a comprehensive understanding of project needs.