Final answer:
The best hypothesis that would accommodate the outcome of the "supportive-audience" condition producing data equivalent to the "hostile-audience" condition would be option D. A nonhostile audience enhances performance.
Step-by-step explanation:
The best hypothesis that would accommodate the outcome of the "supportive-audience" condition producing data equivalent to the "hostile-audience" condition would be option D. A nonhostile audience enhances performance.
This hypothesis suggests that a nonhostile audience has a positive impact on performance. In other words, when students have a supportive, nonhostile audience, their performance is enhanced compared to when they have a hostile audience.
For example, research has shown that students tend to perform better on tasks when they receive positive feedback and encouragement from their audience, as opposed to negative or hostile feedback.