I am unsure if this is the correct question, but I think this is the full question:
Which of the following takes place during the research phase? (choose all that apply)
O software requirements are gathered
O software requirements are implemented in code
O software requirements are analyzed
O software requirements are detailed in a specification document
The answers to this question are software requirements are gathered, software requirements are analyzed, and software requirements are detailed in a specification document (1st, 3rd, and 4th options).