Business use cases are the documents that the business analyst should pay the most attention to ensure the project succeeds this time. Business use cases are documents that describe the interactions between the users and the system, and the value or benefit that the users obtain from the system. Business use cases can help the business analyst and the project team to understand the business needs, goals, and expectations of the stakeholders, and to define the scope, functionality, and behavior of the system. Business use cases can also help to verify and validate that the system meets the requirements and delivers the desired outcomes.
References: PMI Professional in Business Analysis (PMI-PBA)Examination Content Outline1, page 18; Business Analysis for Practitioners: A Practice Guide2, page 93.

Explanation/Reference: https://www.softwaretestinghelp.com/requirements-traceability-matrix/

Interface modeling is a technique to describe how different components or systems interact with each other and exchange information. Interface modeling can be used to depict how the solution will work with all of the company's systems by showing the inputs, outputs, and dependencies of each system. Interface modeling can help to identify potential integration issues, gaps, and conflicts among the systems. The other techniques are not suitable for this purpose. Data modeling is a technique to define the structure, format, and relationships of data. Rules modeling is a technique to define the logic, constraints, and policies that govern the behavior of the solution. Enterprise modeling is a technique to describe the structure, culture, and processes of an organization. References: PMI-PBA Examination Content Outline, page 11; PMI-PBA Reference List, page 1, BABOK Guide v3, page 54.

Explanation
According to the PMI Guide to Business Analysis, a use case is a technique that describes how an actor interacts with a system or a process to achieve a specific goal. A use case can help to prevent problems from occurring in the implementation of a new application, as it can capture the functional requirements and the expected behavior of the system or the process, as well as the exceptions and alternative flows. A use case can also help to design and execute test cases that cover all the possible scenarios and outcomes. In this case, a use case could have prevented the problem of a worker using a field that was not supposed to be used, as it could have specified the valid inputs and outputs for the report, and the actions and responses of the system or the process. Prototyping, diagrams, and document analysis are other techniques that can help to analyze and communicate requirements, but they do not necessarily prevent problems from occurring in the implementation of a new application, as they do not describe the interactions and outcomes of the system or the process in detail. References: PMI Guide to Business Analysis, page 165-166.