Answer:
This is a fragment without a subject. Add to the beginning to show who was doing the action.
Step-by-step explanation:
This construction is a fragment because it resembles a sentence in the sense that it begins with a capital letter and ends with a punctuation mark, but in reality, is not a sentence because it does not express a complete thought. The fragment is missing a subject, the doer of the action. So, in order to correct this fragment, you should add who “took crayons and made beautiful, homemade get-well cards for the children in the hospital.”