Final answer:
The high degree of intergroup conflict is typically expected during the storming stage (c) of group development, as group members experience tensions and conflicts while establishing their roles and viewpoints.
Step-by-step explanation:
During which stage in group development can a high degree of intergroup conflict usually be expected? Among the options provided, c) Storming is the correct answer. The storming stage of group development is characterized by a period where group members may have different opinions and may experience conflict as they are trying to establish themselves and their viewpoints within the group. In contrast, other stages such as Norming, Performing, and Adjourning typically have lower levels of overt conflict. Norming involves establishing norms and cohesion within the group. In the performing stage, the group works efficiently towards accomplishing its goals. Lastly, adjourning signals the dissolving of the group structure, with the completion of tasks and the end of the group process.