Answer:
A variable-ratio schedule
Explanation:
A variable-ratio schedule is a schedule of reinforcement where a response is reinforced after an unpredictable number of responses. This schedule creates a steady, high rate of responding. Gambling and lottery games are good examples of a reward based on a variable ratio schedule.
Schedules of reinforcement play a central role in the operant conditioning process. The frequency with which a behavior is reinforced can help determine how quickly a response is learned as well as how strong the response might be.
The answer to this question is already partially in the question: Picasso wanted to show show the horrors of the war, as experienced by the civil population, to the world. He wanted to show that war has devastating effects and by this turn people's opinions against the war.
The bombing was also done by the fascists so the painting can be seen as a symbol for the fights against the fascists.
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Christ enthroned in majesty

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Musical Instruments: History, Technology, and Performance of Instruments of ...
By Professor of Musical Acoustics Murray Campbell, Murray Campbell, Clive A. Greated, Arnold Myers, Senior Lecturer in Music and Director Arnold Myers
I think it is the 3rd dimension
