Final answer:
The question appears to be a trivia or context-based question about pasta types; without additional context, it's impossible to answer which variety of macaroni is Ben's favorite.
The correct answer is none of all.
Step-by-step explanation:
The question posed does not fall into a classical academic category or grade level as it appears to be a trivia question regarding types of pasta or perhaps a context-based question from a passage.
Nonetheless, if Ben orders a case of his favorite macaroni, it is not clear from the question which type it would be as there are multiple pasta types listed (Spaghetti, Fusilli, Penne, Rigatoni) and no correct answer provided within the context of the question.
To accurately determine Ben's favorite type of macaroni, more information would be required from the text or the passage that the question is based on. Without additional context or information, an accurate response cannot be provided.