What must individuals do each time they take an examination?

Individuals must pay the examination fee each time they take an examination because this fee is a standard requirement to cover administrative costs associated with the testing process. The fee ensures that the testing facility can maintain appropriate resources and personnel needed to administer the exam effectively. It is a usual practice across many examination systems to require payment to reserve a slot and secure access to the examination materials, ensuring that the process is organized and that candidates are committed to taking the examination.

The other options involve procedures that may not be necessary each time an examination is taken, such as completing surveys or attending sessions, which may only apply under specific circumstances or prior to the exam rather than as a standard requirement for every testing event. Paying the fee stands out as the consistent obligation for each examination attempt.