Many cities are revitalizing their downtown areas by bringing in new retail establishments. They are building new civic structures, passing ordinances that encourage the restoration of historic buildings, and developing mixed-use structures that include retail, residential, and other uses. These areas are best described as:.

Traditional business districts.

Explanation:

A traditional business district (TBD) is the commercial and business center of a city. In larger cities, it is often synonymous with the city's "financial district".

the correct answer is 2.

a slump in geology means a mass movement process of slope failure. a mass of rock or unconsolidated material drops along a slip surface. in other words, rock layers move a short distance down the slope. the slump block is an intact block (2), without any landslide material.

in this image, 1 is the surface of rapture (scarp), 2 the slump block, 3 main scarp (crown), 4 base of rapture with debris flow.

slumps are caused by clear cutting on unstable soils and the sagging of earth, in coastal areas they are due to wave infiltration.