The correct answer to question 1 is "d. To show where extensive research happened". Writers don't usually use italics to mention were people could find more information about a specific topic. Answers a, b, and c show situations in which writers would use italics when writing a book.
The correct answer to question 2 is "a. Footnotes are numbered within the text and at the bottom of the page". When we find information that has a footnote explanation in a book, we should look at the number next to the word or phrase and look for the same number at the bottom of the page, in order to find the correct footnote information.
The correct answer to question 3 is "d. They draw the eye to important lists". Bulleted list can summarize and explain specific information and help the reader understand a certain topic in a more efficient form. Answers a, b, and d do not apply because they don't explain why bulleted list are helpful for readers to understand a text better.