The correct option should be option c. If referring to the squiggly line under a misspelled word.
Explanation:
Dear friend
How are you doing today I hope all is well with you and your family am writing this letter to you to tell you about my upcoming birthday celebration.
I going to have a great birthday celebration at the biggest event center in the Victoria Island and all my friends and family are going to be there so pls i beg you to attend the party
Your's sincerely
Dear friend
Answer choice C, Yes this is self plagiarism.
