Answer: The correct reflexive verb to use in this sentence is "se lesiona" (injures herself).
Step-by-step explanation:
Reflexive verbs are verbs that are used when the subject and the object of the verb are the same person or thing. In the sentence, "Carmina" is the subject of the verb "juega" (plays) and "la muñeca" (her wrist) is the object. However, when Carmina injures herself, the subject and object become the same (herself). In this case, the reflexive verb "se lesiona" (injures herself) should be used.
The other options do not use reflexive verbs and are not appropriate for this sentence.