The perspective identifies the roots of much intergroup hostility as resulting from competition over interests, such as resources, that can set groups apart from one another. the perspective emphasizes the psychological needs that lead to intergroup conflict. the perspective traces the origin of stereotyping to the same processes that enable people to categorize, for instance, items of furniture into distinct classes of chairs, couches, and tables.

The correct answer is: 1-Economic 2-Motivational 3-Cognitive.

Explanation:

1-The economic perspective states that the conflicts that may arise in any given group are due to the competition between individuals for acquiring limited resources.

2-The motivational perspective sets the needs and internal motivations of the individuals as the key factor for the resulting phenomena of intergroup conflict.

3-The cognitive perspective proposes that the social phenomena called stereotyping occur thanks to the cognitive processes that help individuals categorize the different types of objects in their environment, such as when people categorize chairs as being different from tables, cars, etc. Stereotyping means doing the same process but with other people.