Answer:
La hermanita de Marianela.
Explanation:
You have to read the whole text and then, you have to answer the question that says "who is Rosa?". In English the text says the following:
<em>Gabriel: Hi Marianela, what's up, how are you?</em>
<em>Marianela: All right and you? What do you do?</em>
<em>Gabriel: Nothing, I'm around here with the boys. And How is Rosa?</em>
<em>Marianela: Hey! She is my little sister. </em><em>Very careful with her!</em>
<em>Gabriel: Me? Don't stain! Your little sister is very pretty but she is very small.</em>
<em>Marianela: Well, I just warn you, look it would be very bad if you hurt her.</em>
<em>Gabriel: Well, everything is cool. Friends?</em>
<em>Marianela: Friends.</em>
<em>Who is Rosa?</em>
<em>Marianela's friend</em>
<em>Gabriel's sister</em>
<em>Gabriel's girlfriend</em>
<em>Marianela's little sister</em>
<em>So as you can see, the text says that Rosa is Marianela's little sister.</em>