I think you are confusing yourself on the words the question is using. It asks about “Risk Assessment”. Risk assessment is a step that you do in order to obtain an understanding of the entity and its internal control. After doing the original “risk assessment”, you have now given yourself the ability to adequately “Assess the Risk of Material Misstatement” (CR x IR). During this “risk assessment” (that is of material misstatement, not overall), you must determine whether you feel control risk is weak or strong. If it is strong, you then perform test of controls.
So based on the question:
“An auditor's risk assessment (apart of the initial “obtain an understanding of the entity and its internal control in order to design both assess the “risk of material mistatement” and to design further audit procedures such as “test of controls”) is based on the assumption that controls are operating effectively. Which of the following was not a step in making this assessment?”
a) Evaluate the effectiveness of the internal controls with test of controls. – (This must be true if he can state they do in fact operate effectively. This step was done in the assessing the risk of material mistatment. The auditor must have wanted to place some reliance on the controls in place because he thought they were strong and performed this evaluation.)
b) Obtain an understanding of the entity's accounting system and control environment.- (This is the premise for the original risk assessment. This allows us to have a better understanding to be able to assess the “risk of material misstatement” (CR x IR)
c) Perform tests of details of transactions to detect material misstatements in the financial statements. (This is no where in determining controls are operating effectively)
d) Consider whether control activities can have a pervasive effect on financial statement assertions.(This is apart of the “risk of material misstatement”
You are correct in stating that “test of controls” occur after the original “obtaining an understanding of the entity and its internal controls (the original Risk assessment is included in this step), however you are doing this step in order to be able to assess the “risk of material misstatement” which involves assessing “Control Risk and Inherent Risk”. Which then will determine whether or not you “Test Controls” based off the level of reliance on the controls in place.
While this is pretty wordy….I hope this makes better sense, because it helped me make better sense of it….;)