At the Political Convention, the People Are Crowded Together on the Convention

Multiple Choice

At the political convention, the people are crowded together on the convention floor. Although the large group is a mixture of different gender, ages, and races with many different outfits, you easily group these people together based on the sign being held up in the middle of each group that bears their state's name. Your grouping was the result of which perceptual principle?

A) contiguity
B) common region
C) figure-ground
D) continuation