Evaluate the Given Expression $\frac { \pi } { 2 }$

question 1

Multiple Choice

Evaluate the given expression. cos $\frac { \pi } { 2 }$

• A)Undefined
• B)-1
• C)0
• D)1

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Definitions:

Neurotransmitter

Chemical agents that facilitate communication between neurons across synapses in the nervous system.

Dopamine

A neurotransmitter associated with pleasure, movement, and attention in the brain.

Amphetamine

A potent central nervous system stimulant used in the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy, and sometimes as a recreational drug.

Dopamine Hypothesis

A theory suggesting that the imbalance of dopamine levels in the brain plays a critical role in the development of schizophrenia and other psychotic disorders.