A famous work by Leonardo da Vinci that was as commissioned by the catholic church is

A) Mona Lisa

B) La Primavera

C) The Last Supper

D) The Birth of Venus

Rewarding successive approximations of a desired behavior is part of which process?

Did Napoleon defend or betray the ideals of the French Revolution?

Which is one disadvantage of owning a home compared to renting a place to live?

Why did angry Greek citizens storm into the streets in 2012 to protest? A.) Some European nations threatened to take over the government of Greece if it couldn't fix its economy. B.

Which region had previously been claimed by France and Germany and created tension between the two countries prior to World War I

How did the city of Santa Fe in the state of New Mexico begin

Judging another based solely on his or her intellect, knowledge, and opinions would be considered what type of prejudice?

How did the defeat of the of the Persians contribute to the rise of Greece's golden age?

What is First Nations?

After a pigeon learns to peck at a green light, the pigeon also pecks at a light that is a slightly different shade of green. This is an example of:A) the learning curve. B) the law of effect. C) extinction. D) generalization.