Please look at any recent examiner’s report for the examiner’s explanation of what is called for when a question asks for the “auditor’s response”.
“Audit procedures” is a generic terms for the procedures by which audit evidence is gathered – see Chapter 10 of OpenTuition notes. Look at the overview of the audit process (Chapters 7 & 8) to see where tests of control and substantive procedures are used. See Chapter 12 section 6 for a summary of tests of controls. You will find lots of examples of substantive procedures in Chapters 17-22.
Read one (or more) recent examiner’s report for guidance on tests of control and substantive procedures.