C. Group think.
Group thinking is the most likely barrier to innovation for Irene's team. Groupthink occurs when a group of people prioritizes consensus and conformity over critical thinking and creativity. In this case, the team may be so focused on agreeing with each other that they fail to consider new or innovative ideas.
Soft skills, multiple intelligences, and diversity can all be beneficial to innovation. Soft skills like communication and collaboration can help team members share ideas and work together effectively. Multiple intelligences can bring different perspectives and approaches to problem-solving. Diversity can bring unique experiences and insights that can lead to more creative solutions.