Kyle McNeill teaches 4th grade at Harrison Elementary School. Which parts of his lessons should Mr. McNeill be prepared to differentiate to best meet the learning needs of all of his students, including the English language learners in his class? I. The goal or big idea II. The essential questions III. The desired levels of knowledge IV. The desired levels of skills Group of answer choices I and III only I and II only III and IV only I, II, III, and IV