Final answer:
A key disadvantage of small group communication and decision making is the potential for excessive risk taking due to group polarization and pressures for group cohesion, which can lead to groupthink.
Step-by-step explanation:
A disadvantage of small group communication and decision making is that it can lead to excessive risk taking (Option B). This occurs due to a phenomenon known as group polarization, where the group's initial leanings get stronger after discussion within the group. For instance, if members of a small group initially have a slight tendency towards taking a risk, after discussing among themselves, they might end up taking even greater risks than any of them would have considered on their own.
This tendency is linked to the desire for group cohesion and the influence of conformity pressures. Furthermore, groupthink can exacerbate this issue, making it a notable challenge in small group settings. Groupthink occurs when the desire for group harmony or conformity results in irrational or dysfunctional decision-making outcomes. It can lead to decisions that prioritize unity over critical evaluation.
Moreover, collective action problems are generally less severe in small groups because it's easier to monitor and enforce behavior, and the peer pressure to conform is stronger. However, when it comes to decision making, this can result in the noted excessive risk taking if the group is not diverse in thought or if dissenting opinions are not adequately considered or voiced.