Final answer:
The correct answer is option d) Well; poorly.
Step-by-step explanation:
Social facilitation is a concept that explores how the presence of others affects an individual's performance on tasks. According to the work of psychologist Robert Zajonc, the correct answer to the student's question is: Social facilitation is the idea that you will likely do well on a simple task and poorly on a more complex task when other people are watching you.
This notion is supported by research indicating that when people have an audience, their performance improves on tasks that are simple or that involve well-learned behaviors, due to the increased arousal caused by the presence of others. However, for complex or unfamiliar tasks, this increased arousal can lead to performance decrements, making it more likely for an individual to do poorly when observed.