The correct option is C Glumaceae
Glumaceae is the term which is used to describe the collection of the all the plants in the grass family. This term was used by Bentham and Hooker. The categories are the different ranks in the hierarchical classification. The categories in the descending order are Kingdom, Phylum, Class, Order, Family, Genus, and Species. Glumaceae is not defined as a category.
Thus, the correct answer is option D.