Which is the most accurate statement about consciousness?

a. The ability to communicate symbolically with ourselves may give rise to consciousness.
b. Consciousness is not an essential human trait because the evolutionary function of
consciousness has never been discovered.
c. The language area of the brain is the most likely location of the center of consciousness.
d. It is unlikely we will understand human consciousness because the necessary research
would be unethical.
e. One characteristic that separates humans from nonhuman animals is consciousness.

a. The ability to communicate symbolically with ourselves may give rise to
consciousness.