The sentence that best explains how the widespread application of steam power affected En glish agriculture in the first half of the nineteenth century is option B. Agricultural produce could be marketed far from the areas where it was grown.
At early 19th century the British invented steam locomotives, which allowed the transportation of large amounts of goods and raw material to be delivered from the farms to the cities. Now fresh goods could be transported to far places.
Homosapiens (us) were alive during the same time period. That's why some people have a small percentage of Neanderthal in their genes - the Homosapiens mated with the Neanderthals.