Answer :

Extrinsic motivation  is the word that best fits the definition I have to get good grades to impress my grandparents.

More about Extrinsic:

Extrinsic motivation occurs when we behave in a specific manner or engage in a certain activity because we desire to get something in return or avoid getting something in return. You won't act in a certain way because you like it or find it enjoyable, but rather because you want to obtain something like that in return or stay away from something terrible.

There are not always material rewards for extrinsic motivation. It may also be accomplished through impersonal benefits like adulation and celebrity.

Learn more about Extrinsic motivation here:

https://brainly.com/question/13054561

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