Last year, a company registered a high number of complaints about its customer service. Which of the following tools or techniques can help to identify the high-priority changes needed to improve that service?

A sponsor requests a new requirement The business analyst explains that most of the information needed for this requirement does not exist and that the requirement cannot be implemented. The business analyst recommends deferring the requirement until the needed information is available and then adding it to a subsequent project The sponsor agrees.
What should the business analyst do next?

In the first few weeks after a large implementation of a new web-based application, a critical report failed.
Further investigation determined that a worker had been using a field that was not supposed to be used.
This issue was not identified in testing.
Which technique could have prevented this problem from occurring?

A business analyst is attempting to elicit requirements on a current project. The business subject matter experts (SMEs) from various departments in the company question how the solution will work with their various systems.
Which modeling technique should the business analyst use to depict how the solution will work with all of the company's systems?

A business analyst is planning the business analysis activities for a new payroll project. Due to a tight timeline, the analyst advises stakeholders that the requirements sessions should begin as soon as possible.
Which key factor drives the selection of business analyst activities to be included in the project?