The the choices provided the correct answer is noun clause. "Whoever is interested in the past" is a noun clause.
1. In last week’s paper my favorite post I read about was the coming innovations in “How to Succeed in Business”, Reed Forgrave’s article.
2. Before the end of the day the workmen promised to fix the bedroom fan, replace a broken door hinge, plumbing in the basement, they would tack down the faulty carpet and try to deliver the new cabinets.
3. Several technicians worked on the corrupt files of James, Alicia, Margaret and Jose.
feels like the only thing you're doing is giving us your homework to do what you should be doing
Answer:
Some sentence fragments start with subordinates. Some examples of subordinators are 'when', 'after', 'although', 'before', 'if', 'since', 'until', 'when', 'where', 'while', and 'why'. Sentence fragments can also be phrases.