The correct option is
B Centipede
Option A; Centipede is a predatory animal with a flattened elongated body composed of many segments and innumerable legs. This word hence is the right option.
Option B; Mammal is a warm-blooded animal which gives birth to its young ones. This word does not mean the aforesaid and hence this is an incorrect option.
Option C; Herbivorous is an animal anatomically adapted to eating plant material. This option is incorrect as it does not mean the aforesaid.
Option D; Vertebrate is an animal or a large group distinguished by the possession of a backbone. Hence this option is incorrect.