Which of the following is a method of containment?

Containment in design refers to the way elements are organized within a defined space or structure, creating visual separation or grouping for clarity and focus. Choosing dividers as a method of containment is correct because dividers explicitly create boundaries between different sections or components of a design. They guide the viewer's eye and help to establish a clear distinction, thereby improving organization and usability.

Dividers can take various forms, such as lines, shapes, or colors, and are effective in creating visual breaks that enhance the overall comprehension of complex information. When used appropriately, they prevent elements from being visually cluttered and allow for better navigation and understanding of the content.

The other options, while relevant design principles, do not directly pertain to the concept of containment in the same way. Hierarchy pertains to the arrangement of elements in order of importance, which affects how information is perceived but does not inherently create boundaries. Emphasis focuses on highlighting certain elements over others to draw attention, rather than containing them. Scale refers to the size of elements in relation to one another but does not imply the creation of separation or grouping.