tyb
"Thank you for your attention on this matter"
Thank You for Your Attention Origin
Language experts have no idea where the phrase “thank you for your attention” originated. However, there is some speculation that it comes from the age of business writing in the late 1800s. The phrase was a way of thanking people for listening to your argument or side of the story.
The words “thank you” derive from the word “think,” which had the original meaning of “I’ll remember what you did for me,” or “I’m in your debt.”
“Thank you for your attention” would start to enter the English language in the first recorded formats of business writing between parties, and it would go on to be a popular way for people to end their presentation.