Answer: The new agricultural methods seen in Great Britain during the 18th century were characterized by the development of larger blocks of land by the enclosure process, and smaller farmers’ loss of land. This process was accompanied by a shift from subsistence farming to commercial agriculture, which led to increased productivity and efficiency. The division of large blocks of land into long, narrow strips, with a three-year crop rotation was also an important part of these new agricultural methods. Therefore, the correct answer is d) the division of large blocks of land into long, narrow strips, with a three-year crop rotation.