Final answer:
The configurable item in a project could be design & test specification, source code, or log information; hence, the correct answer is (d) All of the mentioned, as they can all be subject to configuration management.
Step-by-step explanation:
In the context of project management and software development, a configurable item could be any aspect of a product that can be changed and kept under version control. The options provided: (a) Design & Test specification, (b) Source code, and (c) Log information are all valid examples of configurable items. However, the answer is (d) All of the mentioned since each of these components can be configured or modified during the course of a project, and changes to them would typically be subject to configuration management processes.
Design & Test specification documents outline how a product or feature should be designed and tested. These are often evolved as the project progresses.
The Source code is a core component of any software and is continuously modified throughout the development life cycle. Log information might refer to change logs or other documentation that tracks the history and rationale behind changes made to the project. These documents are crucial for maintaining the history and understanding the evolution of the project.