The correct answer is D. You can find ideas for pre-questioning in any of these (Textbook, teacher, study group).
The ideas for pre-questioning can be provided by the teacher or a textbook. They can provide students with some questions that students have to take into account before reading. These Ideas can also emerge through study groups. By forming study groups, students can brainstorm and think about more questions to take into account before reading a text.
Pre-questioning before reading is a very important step because it enhances your general comprehension. This technique can be used to confirm an expectation, to extract specific information and to obtain more details.