Answer:
maintains a 3.5 grade average in order to keep her phone.
Explanation:
Kit is scoring 3.5 grade because she wants to keep her phone. It is a classic example of extrinsic motivation. Letting her keeping her phone is the external reward she is getting by performing a particular activity ( achieving 3.5 grade in this case). The definition of extrinsic motivation emphasizes that it a kind of motivation to perform an activity that is driven by an external reward.