What Group Includes the Fastest,biggest,and Smartest Invertebrates

Question

What group includes the fastest,biggest,and smartest invertebrates?  
A) Squids
B) Bivalves
C) Chaetae
D) Cephalopods
E) Nudibranchs

Accepted Answer

Cephalopods, such as squids and octopuses, are known to be the fastest, biggest, and smartest invertebrates. They have the ability to change color and shape, have complex nervous systems, and exhibit intelligent behavior. Bivalves, such as clams and oysters, do not possess these characteristics. Chaetae are bristle-like structures found in certain invertebrates but are not representative of a group of organisms. Nudibranchs are a type of sea slug and while they can exhibit clever survival tactics, they do not have the same level of intelligence and physical capabilities as cephalopods.