Melanie needs to ensure that readers are able to locate specific sections within a document easily. what should she include in the document?

concordance
index
table of contents
bibliography

in this case is table of contents

Explanation:

If Melanie want to organize the content, she can use index or table of content, but for specific sections table of content is easier to use.

For example:

Melanie can organize the titles in different levels like subtitle at the same page.

1 History1

1.2 USA History1

 1.3 California History1

Melanie have to mark every title and subtitle in the document like "History -title 1", "USA History - title 2", "California History - title 3".

Melanie can create the table on content automatically in Word: at the section -> Reference -> table of content.

Readers can locate every important section by page, title and subtitle.

d. local area network (lan)

explanation:

a local area network (lan) is a collection of computers it connected to one another or to a common connection medium.

i hope this you, and have a wonderful day!