Answer:
facts and reasoning is your answer !
Step-by-step explanation:
opinions and expectations is what you (the reader) personally thinks. it will get you nowhere in terms of evidence. doubts and questioning is the same way. it will get you nowhere in this field. (remember, questions are always good, but when you use it, you must make sure they aren't in your conclusions.) inferences are just guesses based on prior knowledge, and you don't want to use inferences in evidence.
hope this helps!
~mina