Explain the role of 'Themes' in Microsoft PowerPoint.

In Microsoft PowerPoint, themes play a crucial role in ensuring that presentations have a cohesive and polished appearance. A theme includes a set of predefined colors, fonts, and effects that create a unified visual style throughout the entire presentation. This consistency is important because it helps to enhance the audience’s focus on the content rather than being distracted by varying styles.

Using a theme allows presenters to quickly apply a professional look to their slides without needing extensive design skills, facilitating a more seamless flow and professionalism in the presentation. This is particularly beneficial in collaborative settings where multiple users work on a single presentation, as it ensures that all slides match in terms of visual appeal. Themes also enhance brand recognition when corporate brands are applied, as the visual identity remains constant across all slides.