Answer:
grapevine communication
Explanation:
According to my research on different communication methods, I can say that based on the information provided within the question the information has been exchanged through grapevine communication. This is a form of communicating in which information is spread rapidly between employees and superiors and does not follow any structure or rule-based system.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.