What is the definition of a theme?

Which of the following is not one of the part of speech

Which best explains rev. simon hosack’s reaction to stanton’s feelings about behaving like a boy?

Which sentence is written correctly? mrs. ellis, a petite woman, wore the finest dresses from paris. mrs. ellis a petite woman, wore the finest dresses from paris. mrs. ellis, a petite woman wore the finest dresses from paris. mrs. ellis a petite woman wore the finest dresses from paris.