Final answer:
Sonia shows empathy towards María by understanding and sharing her feelings, which is important for building a deeper connection and trust in their relationship.
Step-by-step explanation:
In the specified pages of chapter 21, Sonia demonstrates empathy for María by showing understanding and sharing in the feelings that María is experiencing. Although the exact details are not provided in the question, generally, empathy is expressed through attentive listening, verbal acknowledgement of someone else's feelings, or supportive actions. This display of empathy is likely critical in strengthening their relationship because it helps María feel seen, heard, and valued, which can foster deeper trust and connection between the two characters.