The answer is (A) , abolish slavery
In general, an extended metaphor is "<span> a metaphor that sustains the comparison for several lines, or for an entire poem" since it is almost always longer than a standard metaphor. </span>
The industrial revolution caused Europeans to look for new colonies by wanting seek untapped natural resources and therefore cheap materials. Industrialization resulted in mass production of goods. So it created the need to find new markets.
The corporations arose because the massive industries needed more expert management.