Final answer:
The answer is true. One must be careful when speaking over the intercom system because it is a public address system and words used inappropriately or miscommunications can lead to confusion or distress.
Step-by-step explanation:
The answer to your question, "You must be careful what you say over the intercom system" is a) True. The intercom system is a public address system that broadcasts messages to numerous people, often in a school or workplace environment. Because it is openly broadcasted, you need to be careful with the words and tone you use as to not offend or provide incorrect information. Miscommunications can lead to confusion or distress, so always ensure to communicate with clarity and respect over the intercom system.
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