Which combination of questions would help a reader figure out the theme of a text selection?

During sensitive periods of brain development like cell migration the brain is vulnerable to effects like: a. malnutrition b. infection c. toxins /drug use d. b and c e. all of the above

What kind of ingredients is in cocoa puffs

Which type of educational worker will most likely students find books outside the classroom to them write research papers? administrator librarian designer principal