While the relative costs of concrete and steel are a predominant consideration in the design of a skyscraper, of no less importance to civil engineers is the time needed to fabricate the structural elements and the distance of the project site from the production sites of the raw materials.
A. of no less importance to civil engineersis the time needed to fabricate the structural elements
B. of no less importance to civil engineers are the time needed to fabricate the structural elements
C.
...
A. of no less importance to civil engineersis the time needed to fabricate the structural elements
B. of no less importance to civil engineers are the time needed to fabricate the structural elements
C.
...





