To center a page's contents vertically between the top and bottom margins, tap or click the Page Setup Dialog Box Launcher, tap or click the tab, tap or click the vertical alignment box arrow, tap or click Center in the list, and then tap or click the OK button.
a. Layout
b. Position
c. Alignment
d. Format

Option a is the correct answer for the above question.

Explanation:

The MS-word is a type of word document developed by Microsoft which is used to type the text on it. There are so many features that facilities text formatting. Like text color and text appears on the page. It states that where the text and how the text will appear on the page. So when a user wants to set the page content as vertically centered then he needs to follow the following steps:-

The above-defined option is defined by the question with the blank space for the second step. So Layout is the correct answer to the above question. Hence Option a is the correct answer while the other is not because:-

answer; you are making a normative argument and i am making a positive argument;