According to bobpixels.com:
"<span>levation of the </span>Colorado River<span>, at the bottom of the Canyon, averages out to around 2,200 feet (670 meters). The average elevation of the south rim is around 6,800 feet (2,072 meters) with the highest spot, </span>Grandview Point<span>, being 7,400 feet (2,255 meters). The average elevation of the north rim is about 8,000 feet (2,438 meters) with the highest point, </span>Point Imperial<span>, being 8,800 feet (2,682 meters). The depth of the Canyon at the South Rim, near </span>Grand Canyon Village<span>, measures almost a vertical mile, about 5,000 feet (1,524 meters)."</span>
I believe the answer is : A ) <span>Were penalized for arriving late</span>
In terms of engineering, construction is the activity of putting together different elements, using a detailed design and plan, to create a structure for a certain location. ... Architects and engineers design and build the structure with that location in mind.