Which of the Following Is the Best Example of a Basic-Level

Which of the following is the best example of a basic-level category?

A) Of the words wingtips, shoes, flip-flops; flip-flops is a basic-level category.
B) Of the words shoes, shirts, wardrobe; wardrobe is a basic-level category.
C) Of the words dog, terrier, and mammal; dog is a basic-level category.
D) Of the words lion, tiger, and mammal; mammal is a basic-level category.