The answer is the last option.
If you are talking about Beowulf, then Grendel is the representation of Cain. He is descendant of Cain, who committed the first murder ever. Cain and Abel were Adam and Eve's sons, and since Cain was jealous of Abel, he killed his own brother. Thus, every descendant of his is cursed, which is why Grendel is a monster.
The answer is developmental mechanisms of behavior and
experience. This field is sometimes mentioned to as behavioral neuroscience or
biopsychology. Biological psychologists examine the connection of the brain and
nervous system with behavior, and related areas such as cognitive processes and
emotions.
<span>The best rule to follow in applying operant conditioning to your own life is to is a form of associative learning in which behaviors are triggered by associations with events in the environment. In classical conditioning it is learning in which an organism comes to ASSOCIATE one stimulus with another.</span>