Final answer:
The question is asking to use Example 5 to calculate the value of an integral over a positive oriented simple closed curve C.
Step-by-step explanation:
The question is asking to use Example 5 to calculate the value of an integral over a positive oriented simple closed curve C. The different options a, b, c, and d are possible values that the integral could evaluate to. Since we do not have the specific details of Example 5 or the equation being integrated, it is not possible to provide a step-by-step solution to the problem.