European art and architecture of the 17th and 18th centuries. Giovanni Bernini, a major exponent of the style, believed in the union of the arts of architecture, painting, and
sculpture.

what art movement is it?

United Nations includes both communist and non-communist countries, and no distinction is generally made between the two so answer a) is not correct.

it also discourages isolationism and encourages trade - so answer b and d are wrong.

The correct answer is c. to promote the welfare of the people around the world