Examples of How Architects Can Design Physical Environments to Influence

Examples of how architects can design physical environments to influence people's behavior include

A) the use of raised flower beds to protect signs since people resist trampling the flowers to get to the sign.
B) the twisting pathways within malls that make people linger longer to look at merchandise.
C) the arrangements of college classrooms that clearly define a speaker-audience relationship.
D) all of these.