The figure shows the graph of the position x as a function of time for an object moving in the straight line (the x-axis) . Which of the following graphs best describes the velocity along the x-axis as a function of time for this object? 
Definitions:
Erie Canal
A significant man-made waterway in New York, completed in the early 19th century, crucial for transportation and commerce, connecting the Great Lakes region with the Atlantic Ocean.
Canal Building
The construction of artificial waterways designed for the passage of boats or ships, irrigation, or water supply, playing a critical role in trade and transportation history.
National Railroad System
denotes a network of railway lines that span a nation, connecting various cities and regions, facilitating the transport of people and goods across the country.
Track Width
The distance between the rails on a railway track, significant for the stability and safety of train operations.
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