Final answer:
Congestion, diarrhea, and restlessness are symptoms of communicable illness.
Explanation:
Congestion, Diarrhea, and Unusual restlessness are all symptoms of a communicable illness. Congestion can be a symptom of illnesses like the common cold or flu, diarrhea can be a symptom of infections like norovirus, and unusual restlessness can indicate an underlying infection affecting the nervous system.
Learn more about Communicable illness symptoms here:
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