Final answer:
The first step Matthew and Jennifer should take to resolve their conflict about how to prepare a proposal is to listen carefully to understand the problem.
Step-by-step explanation:
The first step that Matthew and Jennifer should take to try to resolve their conflict about how to prepare a proposal is to listen carefully to make sure they understand the problem. By actively listening to each other's concerns and perspectives, they can gain a better understanding of the underlying issues and find common ground. It is essential for them to stay calm, avoid blaming each other, and focus on finding solutions rather than winning arguments.