Final answer:
In a pure command environment, situations where users need to complete tasks quickly or want to avoid mistakes are likely. Informational social influence is more likely when the answer is unclear, the group has expertise, or individual task performance cannot be easily evaluated.
Step-by-step explanation:
The two situations likely to occur in pure command include when the user needs to complete a task quickly (B) and when the user wants to avoid making mistakes (C). A pure command scenario might happen in an operational environment where quick and precise actions are required, and any errors might be costly.
Regarding informational social influence, it will be more likely under conditions such as when the answer is unclear (b) and when the group has expertise (c), because individuals seek to conform to what they believe is the correct way to think or behave based on the information provided by others. This is also often applicable when individual performance cannot be evaluated and the task is easy, as there is less personal accountability and less incentive for a person to use their own judgment.
The situations where informational social influence occurs align with scenarios where people are more likely to rely on group consensus or expert opinion to make decisions. These contexts include when one is faced with too much information, when the time to make a decision is limited, when the decision to be made is unimportant, when there is little information available, or when an appropriate heuristic is readily accessible in the decision-making process.