Answer:
The correct option for the sentence is:
- Mi papá trajo un libro para mí.
a. Me lo trajo.
Explanation:
In the sentence written in the option A you can see an example of object pronouns, for developing this <em>you must see the substantive or the person who the action for</em>, in this case, "yo", after with the list below:
1. Yo: <u>me</u>.
2. Tú: <u>te.
</u>
3. Él: <u>se.
</u>
4. Ella: <u>se.
</u>
5. Ello: <u>se.
</u>
6. Nosotros: <u>nos.
</u>
7. Ellos: <u>se.</u>
You can select the correct object pronoun, remember that in this type of sentence, <u><em>the object pronoun must be first</em></u>, for this reason, the other options are out.