Sarah wants to create an experiment to determine whether an object's weight determines how fast it will fall. She
hopes to prove that heavier
objects fall faster than lighter
ones. She buys two weights that have the same size and
shape. However, one is heavier than the other. She has her
mother drop both weights at the same time from a
window. To her surprise, the weights land at exactly the
same time. She repeats the experiment several times, but
the weights always hit the ground at the same time. Sarah
is forced to admit that she was wrong; an object's weight
does not affect how fast it falls.
o
A. "She has her mother drop both weights at the same time from a
window."
B. "She hopes to prove that heavier objects fall faster than lighter
ones.
C. "To her surprise, the weights land at exactly the same time."
D. "[A]n object's weight does not affect how fast it falls."

the industrial development of cities in the ruhr area in the nineteenth century is described. the research was based on english and german language sources. several factors that shaped growth and paths of the cities were categorized and analyzed. they are locations, resources, traditions, entrepreneurs, and technological developments. locations and resources were the most important among them; other factors may be regarded as consequences from locations and resources. among the cities, bochum, essen, gelsenkirchen, and dortmund had the richest resources and most favorable locations in the transportation network and grew to be the largest cities in the ruhr area near the end of the nineteenth century. riverside location was also a favorable factor for the development, as shown in the development of duisburg on the confluence of rhine and ruhr. resource distribution can explain the rise of textile industry, metallurgical industry, and coal and iron industries, and the northward progression of the mining industry. tradition was an important factor for cities such as krefeld, barmen, elberfeld, solingen, and remscheid, which experienced development based on their traditions through the nineteenth century. various entrepreneurs exerted influences within and beyond the local level over the ruhr area. technological development stimulated the northward progression of the mining industry and the deep connection between the coal and the iron industries.

the china one is last

explanation:

i guess so you did not explain the answer clearly so i can't