Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.

The term “art deco” has come to encompass three distinct but related design trends of the 1920’s and 1930’s. The first was what is frequently referred to as “zigzag moderne” – the exotically ornamental style of such skyscrapers as the Chrysler Building in New York City and related structures such as the Paramount Theater in Oakland, California. The word “zigzag” alludes to the geometric and stylized ornamentation of zigzags, angular patterns, abstracted plant and animal motifs, sunbursts, astrological imagery, formalized fountains, and related themes that were applied in mosaic relief and mural form to the exterior and interior of the buildings. Many of these buildings were shaped in the ziggurat form, a design resembling an ancient Mesopotamian temple tower that recedes in progressively smaller stages to the summit, creating a staircase-like effect.

            The second manifestation of art deco was the 1930’s “streamlined moderne” style—a Futuristic-looking aerodynamic style of rounded corners and horizontal bands known as “speed stripes.” In architecture, these elements were frequently accompanied by round windows, extensive use of glass block, and flat rooftops.

            The third style, referred to as “international stripped classicism” also came to the forefront during the Depression, a period of severe economic difficult in the 1930’s. This was a more conservative style, blending a simplified modernistic style with a more austere form of geometric and stylized relief sculpture and other ornament, including interior murals. May buildings in this style were erected nationwide through government programs during the Depression .

            Although art deco in its many forms was largely perceived as thoroughly modern, it was strongly influenced by the decorative arts movements that immediately preceded it. For example, like “art nouveau” (1890-1910), art deco also used plant motifs, but regularized the forms into abstracted repetitive patterns rather than presenting them as flowing, asymmetrical foliage, Like the Viennese craftspeople of the Wiener Werkstatte, art deco designers worked with exotic materials, geometricized shapes, and colorfully ornate patterns. Furthermore, like the artisans of the Arts and Crafts Movement inEnglandand theUnited States, art deep practitioners considered it their mission to transform the domestic environment through well-designed furniture and household accessories.

The phrase “came to the forefront” in line 15 is closest in meaning to _________ .