Answer: pay for performance
Step-by-step explanation: In simple words, it refers to the concept under which an organisation tries to motivate its employees to work more by offering them incentives on extra work. These incentives could be cash or related to some other service as such.
In the given case, Valerie is earning from the summer job on the basis of production she do while on the job.
Hence the following case is an example of pay for performance.