The correct answer is C. Because a complex sentence contains one independent clause (in this case, 'the flight attendant coughed gently to get his attention') and at least one dependent/subordinate clause (in this case, 'as Jake was reading the letter from June yet again').
The subjects of the sentence are C and D.
Answer:
like it s not clear wat u r asking make it more descriptive
You have plagiarised
Plagiarism is presenting someone else's work or ideas as your own