Which of the letters shown on this figure would most likely include some intermediate to felsic magmas? 
Definitions:
Operant Behavior
Behavior that is controlled by consequences, including rewards and punishments, following the behavior.
Pavlov
A Russian physiologist best known for his discovery of classical conditioning, where an organism learns to associate a neutral stimulus with a reflexive response.
Frequency
The number of complete wavelengths that pass a point in a given time (for example, per second).
Daily Exercise
Engaging in physical activity on a regular basis to maintain or improve health and fitness.
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