Which is the most effective placement of an item in a design to control emphasis?

What convetion did chardin and delacroix use in the painting grace before meal and liberty leading the people to give the artworks a sense of harmony and stability?

Whereas traditional stock agencies showcase the work of professional photographers, anyone can submit to microstock agencies, provided images meet the criteria that the microstock agency has set up. true or false?

Music plz match the musical term on the left with its definition on the right.