Answer: B. Primary tension
Explanation: The fact that the issue is about students, members of a new group, and that everyone wants to make a good first impression, it is normal that some discomfort occurs during presentation and introduction. This discomfort during the initial stage of group formation, when members establish relationships and determine their roles, is in fact the primary tension. Primary tension is anxiety that always arises when self-opening members, and to minimise this inevitable tension, members are careful not to interrupt one another and to express too strong opinions.