In the context of intergroup conflict, managers should encourage social interactions across groups so that: (A) trust can be developed.
(B) resources can be shared.
(C) employees can perform better.
(D) human resource activities can be held

(A) trust can be developed.

Explanation:

A manager can be defined as an individual who is saddled with the responsibility of providing guidance, support, supervision, administrative control, as well as acting as a role model or example to the employees working in an organization by being morally upright.

Generally, managers are typically involved in taking up leadership roles and as such are expected to be build a strong relationship between their employees or subordinates by creating a fair ground for effective communication and sharing of resources and information. Also, they are required to engage their staff members (entire workforce) in the most efficient and effective manner.

A conflict can be defined as any form of disagreement that arises between two or more parties due to opposing views, opinions, or incompatibility.

Basically, the first step that any manager should take in resolving a conflict within a group of employees working as a team is to get each individual to state the problem from his or her viewpoint.

In the context of intergroup conflict, managers should encourage social interactions across diverse groups so that trust can be developed among the members and as such mitigating the chances of conflict between them.