Classify each of the following items into at least three categor

Classify each of the following items into at least three categories and state your principle of classification.
a. Movies
b. Transportation methods
c. Clothing items
【正确答案】：a. Movies can be classified according to genre (comedy, drama, action), release year, director, main actors, and audience rating.
b. Transportation methods can be classified based on mode (land, air, water), speed (fast or slow), environmental impact (green or polluting), and accessibility (public or private).
c. Clothing items can be classified according to type (shirts, pants, dresses), fabric (cotton, silk, wool), seasonality (summer or winter wear), and style (casual, formal, sportswear).