Answer:
A.) Isabel y Antonia aprendieron a bucear ayer.
Step-by-step explanation:
Tip! If it is about two or more people (excluding yourself), it will usually have . "-ron" at the end of the word.
Ex: Isabel y Antonia aprendieron a bucear ayer.
If it is about two or more people AND yourself, it will have "-mos" at the end.
Ex: "Isabel, Antonia, y yo aprendimos a bucear ayer.