You click and hold on the tool that looks like a T and there you should see "Type on a path tool" click on that and click on your path you created previously and type.
C and D. Pop art has many vibrant colors that are used on many pop culture idols. For example, Andy Warhol does many pop art works. Look him up if you want :)
The focal point is important because a mistake in this focal point often creates a dull, uninteresting photograph. Almost anything can be a focal point if done right, including a stream, interesting tree, or rock formation. Use the rule of thirds to help you place the focal <span>point within the photograph. </span>