Which part of an interview would you establish a proper tone

Opening

Explanation:

During an interview, it is important to chose the right tone when communicating to the interviewer. Most likely, the tone will be a professional, formal one. By using the right tone in an interview, you are demonstrating that you respect the position of the person, and that you recgnize the importance of the meeting. You would also be showing that you are able to behave in a professional matter when it comes to your job. This is a very important skill, regardless of your place of work.

the answer is c because info security should not use them for code