A. The plague poses a serious threat to this society.
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').
Answer: i agree
Explanation: It CAN apply to life. Practice is never perfect, and perfect practice doesnt always make Perfect. EXAMPLE; Albert Einstein, he was a bad kid in his school grades, but yet, he became the Most smartest man in the world. It took him a million tries to do (figure out) his work, it wasnt exactly perfect besides all the practice, but he managed. So yes, it can apply to life in some way, hope this helps.