Talk to the interviewer about how you would overcome objections and bring key stakeholders to a consensus. If possible, use the STAR method (situation, task, action, result) to describe how you've handled this before.

"Each project is unique, with different stakeholders, priorities, and expectations. As the product manager, it is my job to manage the various team and stakeholder personalities to bring them all into alignment. Clear communication about the product vision is the best way to do this. There is one past product that comes to mind, one I had spent a considerable amount of time developing a vision for. When I met with the various stakeholders, I found I had buy-in from everyone except for the engineering team. They foresaw some challenges in the development and were hesitant to get on board. After spending some time listening to their concerns, I realized I had jumped right into the granular details with them and had skipped explaining the overall strategic objectives of the product. I scheduled another team meeting and asked them to let me take a step back and show them the big picture. After that meeting, they saw the full vision for the product and were ready to tackle the technical challenges involved in the development process."