When a person's sentiments drives his actions, then it is safe to assume that they are acting using bias.
What is Sentiment?
This refers to the personal view or opinion which a person has about a particular thing or idea which usually leads to personal bias.
With this in mind, we can see that if a particular character has sentiment for a certain thing, then he usually refuses logic and goes with his emotions because of the sentimental value which the object or thing has for him and this influences his actions.
Please note that your question is incomplete so I gave you a general overview to help you get a better understanding of the concept.
Read more about sentiments here:
https://brainly.com/question/1821878
