The External Auditor May Seek to Place Reliance on Internal

The external auditor may seek to place reliance on internal controls in order to restrict substantive testing.
In each of the following circumstances, select whether the external auditor is likely to place reliance or place no reliance on internal controls.
a. A company with an independent internal audit department
b. A family company where the financial director is related to the chief executive
c. A company where a fraud committed by the purchasing manager has been uncovered
State the main ways in which auditors can gather the evidence they need and provide an example of each method