Horatio is asked what main dish was served for lunch at the cafeteria yesterday. he knows that it was roast beef, but before responding, he observes six other students who say the main dish was pizza. horatio is most likely to say the main dish was pizza if he hears the response from

six students at six different times in six different places.

Explanation:

According to the question,as Horatio is getting pizza as the response from six students as the main dish rather than roasted beef.Getting six same responses from different people who do not ave any relation makes Horatio believe their answer as more reliable and true than his response.

Horatio will most probably say pizza was the main dish as he has got this response from six students in different six time slots and at different six places.Thus, all six individual were not related to each other nor responded at same place or time.