Read the Scenario and Answer the Accompanying Questions

Read the scenario and answer the accompanying questions.
Climate change presents agriculture with challenges and uncertainties. In most of the middle and higher latitudes, global warming will impact the length of the potential growing season. This seasonal change could possibly allow for earlier planting in the spring as well as earlier harvesting, with the possibility of completing two harvests in one season. However, most climate models indicate that conditions for agriculture will worsen in tropical latitudes, as a result of increasing temperatures.
-Agriculture production may possibly move northward in latitude due to increased warming. However, agriculture will only be successful if _______.

A) climate change eventually reverts its current trends
B) polyculture techniques are available
C) appropriate farming technology is available
D) appropriate soils are found at these latitudes
E) pesticides are acceptable for use