Explanation
According to the PMBOK Guide 7th Edition, one of the principles of project management is to create a collaborative project team culture. This means that the project manager should foster a positive and supportive team environment, where team members can communicate openly, trust each other, and share their ideas and concerns. To address the remote team's morale, the project manager should offer opportunities for coworkers to interact beyond tasks, and model this behavior to create a safe space. This will help to build rapport, empathy, and camaraderie among the team members, and to reduce stress and burnout. Some examples of such opportunities are virtual coffee breaks, icebreakers, games, recognition, and feedback. Planning a party, evaluating the challenges, or inviting the team to a work retreat are not the best actions, as they do not address the immediate need to boost the team morale, and they may not be feasible or effective given the remote work situation and the tight deadline. References: PMBOK Guide 7th Edition, page 11-12.