Final answer:
Requirements analysis is the phase of the SDLC that includes identifying what is to be produced, how frequently, and how fast it is to be produced.
Step-by-step explanation:
The phase of the SDLC that includes identifying what is to be produced, how frequently, and how fast it is to be produced is requirements analysis. During this phase, the project team works with stakeholders to gather and document the functional and non-functional requirements of the system. This involves defining the goals and objectives of the system, identifying user needs, and determining any constraints or limitations.