Please respond to the below questions based on Chapter 13 (Capacity and Genuine Assent), 16 (Writing, Electronic Forms, and Interpretation of Contracts), and our class discussions so far. Use full sentences and be sure to state the principles of contract law that apply to the facts in the questions.

1. Zach held a party with his college friends. There was a lot of drinking of alcohol and dancing. At one point, Zach told his friend, Navin, that he would pay for the wedding if Navin asked Navin's girlfriend, Lisa, to marry him. Later that night, Navin proposed to Lisa. A few hours later, Zach passed out in his room.