Question

arachnids are a class of joint - legged invertebrate animals that belong to the arthropod phylum. they are characterized by having two main body parts: the cephalothorax, which combines the head and thorax, and the abdomen. arachnids are known for their eight legs, although not all arachnids have this exact number. the group includes not only spiders but also scorpions, ticks, mites, and harvestmen. they are found in a wide range of habitats worldwide, including terrestrial, freshwater, and some marine environments. arachnids play important ecological roles as predators and scavengers, contributing to the balance of the ecosystems they inhabit. what are arachnids commonly known as? lobster spider ants

Explanation:

The text mentions spiders are a well - known example of arachnids. Lobsters are crustaceans and ants are insects, not arachnids.

Answer:

B. spider