The correct option is: a. Establish objectives and strategies

Explanation:

The "setting the objectives and strategies" is not the part of the assessment and control the performance, but the first step I the planning process where the objectives and target are established for the business. The planning is considered as an intellectual process which connects the gap of past and future events.

The incorrect options are:

Option B: Determining what to measure

Option C: Establish standards for performance

Option D: Measure actual performance

Option E: Take corrective actions

The above options are the part of the controlling process where the standard of performance is determined, and then it will compare it to the actual performance. If there is any correction, then the improving steps are taken.