Which statement is incorrect

Using mental models means constructing something in our thoughts similar to what is presented in text.
 
Reasons given for narratives being easier to comprehend than expository material include greater familiarity with topics covered, as well as, the nature of the written language in narrative selections (which often is closer to that of oral language).
 
Four sequential steps recommended for explicit comprehension instruction, on which many contemporary procedures are based, are: (a) precise teacher explanations, (b) guided practice, (c) independent practice, (d) application to regular connected text.
 
Though main ideas are always explicitly stated in texts, a problem in identification of these arises when students do not know that main ideas may be stated at the beginnings, middles, or ends of paragraphs