See the steps below.
Explanation:
1. Select the Home tab in the ribbon.
2. Select the dialog box launcher in the Styles group.
3. Select the Options button in the Styles task pane.
4. Select All styles in the Select styles to show drop-down menu in the Style Pane Options dialog box.
5. Select the OK button to close the Style Pane Options dialog box.
6. Scroll to Comment Text in the Styles task pane; hold your cursor over Comment Text to reveal the options arrow.
7. Select the options arrow and then select Modify from the drop-down menu.
8. Select the Format button in the Modify Style dialog box.
9. Select Language in the drop-down menu.
10. Select English (or another preferred language) in the Mark selected text as drop-down menu in the Language dialog box.
11. Uncheck Do not check spelling or grammar to ensure that Word will include your comments in spelling and grammar checks.
12. Select the OK button to close the Language dialog box.
13. Select the OK button to close the Modify Style dialog box.
14. Save, close, and then reopen the document to activate your new comment review settings.
Topic 8, Adventure Works
Exhibit.

See the steps below.
Explanation:

When Track Changes is on, deletions are marked with a strikethrough, and additions are marked with an underline. Different authors' changes are indicated with different colors.
When Track Changes is off, Word stops marking changes, but the colored underlines and strikethrough from your changes remain in the document until they're accepted or rejected.

See the steps below.
Explanation:
Click on the new button to select it (or Ctrl+Click, if a macro has been assigned to the button).
Click in the Name Box, at the left of the Formula Bar.
Type a new name, to replace the existing butto name.
Press Enter, to complete the name change.

See the steps below.
Explanation:
If you have to combine separate Microsoft Word documents, you can copy and paste them together if they're short, or merge them if they're long.
Select the Insert tab.

Select Object, and then select Text from File from the drop-down menu.

Select the files to be merged into the current document. Press and hold Ctrl to select more than one document.
Topic 5, Chemistry Lab
Exhibit.