From the following concentration versus time plot for four different reactions, which has the greatest instantaneous rate of disappearance at the time indicated by the arrow? 
Definitions:
Collective Unconscious
A concept proposed by Carl Jung, referring to the part of the unconscious mind that is derived from ancestral memory and experience common to all humankind.
Word-Association Test
A psychological test in which words are presented to an individual who is asked to respond immediately with the first word that comes to mind, used to uncover unconscious associations.
Presence Of Complex
The existence or identification of a multifaceted issue or problem within a specific context or system.
Slips Of Tongue
are verbal mistakes that are thought to reveal subconscious thoughts or feelings, according to Freudian psychoanalysis.
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