Basic to group formation is some contact and some form of interaction between people. This interaction is facilitated by the certain conditions. Which of the following is NOT such a condition?

economic status

Basic to group formation is some contact and some form of interaction between people. This interaction is facilitated by the following conditions:

a. Proximity : Consider your group of friends. Would you have become friends if you didn't live in the same neighborhood, attend the same school, or play in the same playground? Most likely, your answer would be 'No.' Regular interactions with the same set of people provide an opportunity to get to know them, their interests, and their attitudes. Shared interests, attitudes, and backgrounds play a crucial role in developing affinity towards group members.

b. Similarity: Continued exposure to someone allows us to assess our similarities, leading to the formation of groups. 

c. Common motives and goals: When people share common motives or goals, they come together and form a group that can facilitate the achievement of those objectives.