What are some techniques the French used to create the fanciful playfulness that Rococo art is known for?

Rococo art is known for an elegant, playful style, often created with ornate, delicate decoration and the use of mirrors to reflect light and expand interior spaces. These techniques helped produce the fanciful effect described in the question. “Mirror reflections and delicate ornamentation” is the correct choice; robust figures and a sensual feel are more associated with Baroque art.

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