Final answer:
The types of meat offered on nachos depend on the restaurant's menu, which could include beef, chicken, pork, and tofu. Probability functions mentioned are not applicable to the question.
Step-by-step explanation:
The types of meat offered on nachos vary depending on the menu of the specific establishment. In the scenario provided, the options presented are beef, chicken, pork, and tofu. Because this appears to be a question from a menu or service training manual, each option listed could be correct depending on the restaurant's offerings. To determine the correct answer(s), you would need to reference the specific menu or guidelines of the establishment.
The probability functions mentioned, such as P(you will get a piece of chicken that is not 21 oz.) and P(you will not get a chicken breast and you will not get a pork chop), do not pertain to meat options for nachos but rather to the chances of receiving specific sizes or types of meat portions separate from the nachos context.