Passage Summary: A juice company uses a quick heating method for apple juice to kill bacteria without ruining the taste, unlike a longer heating method. They don't heat their citrus juice at all because it hasn't caused any sickness yet.

Reasoning: McElligott uses flash pasteurization for apple juice; intensive pasteurization is the most effective at killing bacteria but hurts flavor; citrus juices are currently unpasteurized.

Analysis: We are looking for a statement that must be true based on the provided facts. The stimulus notes that intensive pasteurization is more effective than 'any other method' at eliminating bacteria, which logically includes the flash pasteurization method McElligott uses. Furthermore, the company's decision to leave citrus juice unpasteurized suggests they only implement these safety measures when a specific threat (like a previous infection) is identified. Look for an answer that reflects the trade-off between flavor and bacterial safety.