The Following Passages Contain Novel Information Describing Real Animal and Human

The following passages contain novel information describing real animal and human behaviours. Use the choices to classify the type of learning exemplified by each passage. A learning type may be used once, more than once, or not at all.
-Without training, an octopus lifts the lid off its aquarium tank, climbs out, and enters a nearby tank. It eats a fish there and climbs out, replacing the tank lid. It then returns to its own tank, closing its own aquarium lid after itself.

A) imprinting
B) classical conditioning
C) operant conditioning
D) insight learning
E) habituation