There is no real right or wrong answer for this question but be sure to back up your personal preference when you provide it. If possible, avoid firmly leaning one way versus another. It's best if you can show the interviewer that you are capable of either facilitating group discussions, or one-on-one, depending on what is most appropriate for the situation.
"I believe that group discussions and one-on-one meetings should be facilitated appropriately, according to the situation at hand. I prefer to have group meetings because they can turn into amazing brain-storm sessions but I do understand the importance of more intimate conversations as well."
"I prefer one-on-one meetings when corrective action needs to be taken; however group discussions are best when making plans for a project. I believe both types of communication are important when the time is appropriate."
"I am more of a one-on-one person in my personal life which I tend to lean towards in my management career as well. I prefer making a genuine connection with each of my team members. Individually. Group discussions need close moderation, so they remain on track. With that said, there are great advantages to group discussions as well. Ideas tend to flow better, and they can create an environment of camaraderie."
"In marketing, we are all about group discussions. It's pretty important to us that we have great discussions where we can brainstorm, make progress on projects, and be creative. I am comfortable having one-on-one discussions when necessary as well."
"There are a time and place for all discussion types which is why I would say that I do not lean one way or another; rather, I am discerning about the type of meetings that I call. As a leader, I am comfortable in a group or one-on-one setting."
"As a manager of a sales team, I prefer group discussions or team huddles as we call them. In these meetings, we can make plans for upcoming months while also discussing ideas on how we will meet our targets. I like to keep one-on-one meeting for making individual performance plans or taking corrective action with underperforming team members."
"Group discussions have their value, but I know the importance of connecting with my students on an individual basis as much as possible. I can comfortably facilitate either. "