Complete the following reaction by filling in the necessary reagents. 
Definitions:
Performance Rating
A measure of how well an employee, system, or process meets the defined standards of efficiency or effectiveness.
Normal Time
The amount of time typically required to complete a task or process under standard conditions, often used in planning and scheduling.
Standard Time
The amount of time allowed for the completion of a job or task based on average speed under normal conditions.
Variable Allowance
An adjustment in cost or time estimates to accommodate changes or variations that may occur in project planning or execution.
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