Behavioral questions are designed to learn how you would respond to a specific workplace situation, and how you solve problems to achieve a successful outcome.
Behavioral interview questions are generally formatted by presenting a situation, inquiring about what action you have taken to respond to something similar in the past, and what the result was.
The interviewer will ask how you handled a situation, and you will need to respond with an explanation of what you did. The logic is that your success in the past is a positive indicator of your success in the future