Answer: D
Explanation: They need not to reply on domestic market for there business goals and opportunities, they need to be proactive in their business, explore new locations,carryout research in other foreign market and develop ideas that will improve their business since the opportunity in the domestic market reduces.
In other words, since the domestic market opportunities are decreasing, that have to spears their tentacles to foreign market for survival .so the best option that fits into the blank is "option D" proactive.
The Colfax County War was a range war that occurred from 1873 to 1888 between settlers and the new owners of the Maxwell Land Grant in Colfax County, in the U.S. state of New Mexico. The war started when the new landowners tried to remove the local settlers from the land they had just bought. The locals refused to leave, as they had settled much of their livelihood in the grant, which resulted in conflict and violence in 1875.
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The answer is b) the federal government's assumption of state debt