Answer: assertive
Step-by-step explanation:
Based on the information given in the question, Cindy's behavior can be best described as being assertive.
To be assertive means that an individual can stand up for his or her own rights and that of other individuals in a calm way without being aggresive towards others.
Here, we can see that despite the fact that Carl pushed Cindy, she calmly got her point across to Carl without being aggressive or upset him. This shows that she's assertive.