Question

Choose the sentence that has correct punctuation.
“More and more teenagers are being diagnosed with type II diabetes,” said Mrs. Allen, our school nurse.
“More and more teenagers are being diagnosed with type II diabetes” said Mrs. Allen, our school nurse.
“More and more teenagers are being diagnosed with type II diabetes,” Said Mrs. Allen our school nurse.
“More and more teenagers are being diagnosed with Type II diabetes” said, Mrs. Allen, our school nurse.

Answer 1

The one that has the correct punctuation is the second option :  "More and more teenagers are being diagnosed with type Ii diabetes" said Mrs. Allen, our school nurse

After quotation mark, you shouldn't use capital letter and you shouldn't use comma before the second quote

hope this helps