That would be a compound sentence......and that is when 2 independent sentences are separated by a comma and a coordinating conjunction
Dear Mr/Mrs _____,
I am writing to you about my concern for the noise that is being made in the school, and how it is disrupting me and others’ ability to work.
It would be sincerely appreciated if you could take this issue into regards, and talk to the people concerning the disruption.
Sincerely, _____,
Year ___.
Answer:
I am very sorry I do not get your question..
Explanation:
Answer: 4th one
Explanation: it would be the 4th one because the correct punctuation would be a commma.
i hope this helps!!!1