Final answer:
The tract of land described as the SW ¼ of the SE ¼ of the NE ¼ of the NW ¼ contains 10 acres, which is determined by successive divisions of a 640-acre section.
Step-by-step explanation:
The question pertains to how land is described and subdivided in the context of the United States Public Land Survey System. A tract of land described as the SW ¼ of the SE ¼ of the NE ¼ of the NW ¼ represents successive divisions of a section. A section is typically 640 acres, so a quarter of that is 160 acres, a quarter of that quarter (or a quarter-quarter) is 40 acres, and a quarter of that quarter-quarter (or a quarter-quarter-quarter) is 10 acres. Thus, the correct answer to the problem is that this tract of land contains 10 acres.