I'm assuming these are the options.
<span>enforcing state laws <--- Is your answer.
representing the state in the U.S. Congress
revising the state constitution
deciding on state criminal cases</span>
In this case, Andrew was using systematic desensitization, this is a psychological technique of cognitive-behavioral therapy. <span>It consists of exposing oneself to something</span> that causes fear in a systematic way as a means to overcome fear. Andrew faced his fear gradually and so he could overcome it. This technique helps in many different types of phobias.
I hope my answer can help you.
A defence mechanism would be the Freudian term specified in referring tactics <span>that the ego uses to reduce anxiety by unconsciously distorting reality. In addition, a defence mechanism is one of the necessary psychological methods wherein the body counter-attacks viruses and bacteria invading our body.</span>