Tests impacted by diurnal fluctuation are frequently scheduled as scheduled examinations, and it is critical to collect them as near to the time requested as feasible.
Variation refers to the change in the situation or the condition of the something or someone. It can be the slightest of the change.
Scheduled tests are frequently required for tests impacted by diurnal fluctuation, and it is critical to collect them as near to the time ordered as feasible.
Therefore, it can be concluded that Scheduled tests is the correct option for the blank.
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