Answer:
Unfavorable direct cost variance
Step-by-step explanation:
In this question, we have a classic example of unfavorable direct cost variance.
Direct costs are those, as the world implies, directly involved in the production process. The specific materials that are used to produced something, and the specific amount of labor that is employed to produce it, are what is known as direct costs.
In the case of labor, these costs are known as direct labor costs.
In the question, the manager implemented a measure to improve labor productivity: monetary incentives for those who increased their quota.
However, her actions led to a increase in direct labor costs because the workers responded positively to the incentive and many were able to clain the benefits.
The manager will have to evaluate if the incentives can continue, or if the policy needs to be changed.