According to Socrates, is considered the identity of the person.

The answer is psyche.

Explanation:

In terms of psychology, the psyche refers to the totality of aspects related to the human mind, conscious as well as unconscious. The term has usually been utilized in aspects concerning psychology and philosophy.

It dates back to ancient times, and it is a representation of one of the main concepts that are used to understand human nature from a scientific perspective. The psyche is the main idea in Plato's philosophy. In his Phaedo, Plato gave Socrates four arguments related to the soul's immortality, as well as some aspects regarding life after death.  

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer