Solution:

1) Select the 'View' menu and select 'Outline'. (The presentation is displayed in Outline view.)
2) Select (highlight) the text to be formatted.
3) Select the 'Format' menu and select 'Font...'. (The Font dialog box appears.)
4) (Optional) Do one or more of the following:

a) Select the desired font from the 'Font' scroll-down list box.
Font list box
b) Select the desired font style from the 'Font Style' list box.
Font Style list box
c) Select the desired font size from the 'Size' list box.
Size list box
d) Select the font effect check boxes in the 'Effects' group.
Effects group
e) Select the desired text color from the 'Color' drop-down list box.
Color list box

5) Click 'OK'.