Final answer:
Among the types of squids listed (Loligo, Nautilus, Spirula, Architeuthis, and Ommastrephes), the Nautilus is typically seen as the least active, due to its heavy shell restricting its mobility.
Step-by-step explanation:
The question asks about the relative activity levels of various species of squids. This topic relates specifically to Biology, with a focus on Cephalopods, the class that squids belong to.
Among the options provided (Loligo, Nautilus, Spirula, Architeuthis, and Ommastrephes), the Nautilus is generally considered to be the least active. This is primarily due to its heavy, external shell which limits its mobility and requires it to rely more on camouflage than speed or agility for survival.
On the contrary, species like Loligo and Ommastrephes are known for their high activity levels and swift movements. They are often found in highly dynamic environments and are capable of rapid color change and jet propulsion.
It's important to note that individual behavior can vary broadly within species, and activity levels might also be influenced by factors like age, gender, environment, and diet.
Learn more about Squid Activity Levels