Cooperative activities, equal status and institutional support comprise:

A) ways to increase hostility between groups.
B) ways to avoid deindividuation.
C) Allport's conditions for optimal contact.
D) conditions affecting social identity.

Allport's Conditions

Criteria identified by psychologist Gordon Allport that facilitate positive contact between groups, including equal status, common goals, and institutional support.

Deindividuation

A psychological state of decreased self-evaluation and decreased evaluation apprehension causing antinormative and disinhibited behavior.

Hostility Between Groups

Negative attitudes and aggressive actions directed from one group towards another, often stemming from prejudices or conflict over resources or values.