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1. By definition, the French court ballet was a composite art form, a combination of equal elements - poetry, dance, music and painting. The genre came into existence at the end of the 16th century.

3. Ballet and opera began in the 17th century, with the elaborate spectacles devised at European courts. These were flamboyant entertainments used to celebrate marriages or show off the wealth and power of the ruler.

I don't know about 2 sorry

the above mentioned statements talks about the creativity of an artist and to what extend they can utilize and experiment on the objects provided.   differing size and subjects are given so that an image of wisdom is created. displaying a transition from light to dark in something by darkening sections in order to create a shadow. and lastly, putting bits and pieces together to formulate a new image.