A. It makes the speaker question what type of person Abuelito has become.
Explanation:
In the story "Abuelito Who," we learn about a girl who reflects on her aging grandfather, who she calls "abuelito" (Spanish for "grandfather"). She describes to us how Abuelito has aged, and how this has made him different. In fact, it leads her to reflect on what kind of person he has become. Throughout the story, we learn that Abuelito shows typical signs of aging, such as the fact that he sleeps a lot and is rarely very involved in activities.
