Which of the following roles is responsible for investigating and documenting business requirements?

The role responsible for investigating and documenting business requirements is that of a business analyst. A business analyst serves as a critical link between stakeholders, gathering detailed information on their needs, expectations, and existing processes. This involves conducting interviews, workshops, and research to identify what is needed from a business perspective and subsequently documenting those requirements in a clear and structured manner.

The business analyst plays an essential part in ensuring that the project's objectives align with broader business goals and that the resulting solution addresses the specific needs of the organization. They also work closely with various stakeholders, including users and technical teams, to validate requirements and adjust them as necessary throughout the project lifecycle.

In contrast, a programme manager oversees the overall direction and management of programmes of work, ensuring strategic alignment and resource allocation, but does not typically engage deeply in the day-to-day documentation of requirements. A systems designer focuses on how the technical solution will be built based on the requirements but is not primarily responsible for gathering or documenting those requirements. The business sponsor, usually a senior stakeholder, provides vision and support, funding and resources, but does not delve into the specifics of business requirements documentation.