The text defines respondent conditioning as involving stimulus response has to do with reflexes This highlights that respondent conditioning deals with involuntary reflexive behaviors that are elicited by specific stimuli either unconditioned innate or conditioned learned through association The scenario where a person experiences an increased heart rate and sweaty palms when encountering a snake is an example of an autonomic reflexive response fear that is typically an unconditioned response to a fearinducing stimulus or a conditioned response if the individual has learned to associate snakes with danger Option A A child learns to say please to request a desired toy describes an operant behavior Saying please is a vocal response that is strengthened by the consequence of receiving the toy which is a form of positive reinforcement Option B A student diligently studies for an exam because previous good grades resulted from similar study habits also describes operant behavior Studying is a behavior maintained by the reinforcing consequence of good grades Option D An individual avoids touching a hot stove after experiencing pain from a previous contact with it is an example of operant behavior maintained by negative punishment or direct avoidance learning The pain from touching the stove serves as a punisher decreasing the likelihood of future touching or the avoidance is reinforced by the absence of pain While there might be a reflexive withdrawal during the initial contact the avoidance of touching it later is an operant contingency