<span>When checking for subject-verb agreement, you want to identify </span>the simple subject.
Organizing sentences around a central idea creates C. supporting details.
Under is a preposition.
Prepositions are words that indicate location. It tells the location of the subject or object.
Prepositions not only show the actual location of a place but also the location in time.
Some prepositions of an actual location are: in, on, under, above, behind, beside, etc.
Some prepositions of a location in time are: before midnight, after the exams, during winter....
Answer: the first one is "champollion was named "keeper of the egyptian collections" the second one is "he had a tremendous job of deciphering and organizing to do" the third one is "his brother completed it for him" and the last one is "scholars were able to trace the entire history of egyptian writing