You can use a convex lens (or magnifying glass) to converge the sun light into a single point and burn a hole in paper (or burn an ant on the ground). That point is...

A .the focal point since the rays coming from the sun are nearly parallel
B. outside the focal point since the rays coming from the sun are diverging
C. the focal point since the sun is the other focal point of the lens
D. inside the focal point since the rays coming from the sun are converging