Final answer:
The correct option is omadrastra. Lucía is the student's stepmother in Spanish.
Step-by-step explanation:
The correct option to complete the sentence is omadrastra.
Omadrastra means 'stepmother' in Spanish. So, Lucía is the student's stepmother.
An example of a sentence using the correct option would be: 'Yo iba a la boda de mi papá con mi omadrastra, Lucía' (I was going to my dad's wedding with my stepmother, Lucía).
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