Make a tree diagram.
The first choice is between waffle cone or sundae, and each of those could have either apricot, chocolate, or blackberry. How can you put this information into a tree diagram?
How many total combinations are there? How many of those total have apricot ice cream?
How many of the 6 combinations include a sundae?
See the tree diagram in part (a).
How many times does orange sherbet show up in the diagram?