The advanced quize wasn't that difficult. They show a picture of a yucca and give you choice like a coreopsis, a grass, a salvia and an aster. If they wanted to make is difficult they should show a picture of a yucca and give you choices like, Yucca glauca, Yucca louisianensis, Yucca rupicola and Yucca thompsoniana. Then I would have had trouble.
