Multiple Choice, Single Answer

Read the passage and answer the question.

Driverless tractors, guided by GPS and onboard sensors, are increasingly used on large farms to plant and harvest crops with minimal human oversight. These machines follow pre-programmed routes across a field, adjusting speed and direction in response to real-time data about soil conditions and obstacles. Proponents argue that the technology addresses a persistent shortage of agricultural labor, allowing a single operator to supervise several machines from a control room. Critics, however, note that the upfront cost of the equipment and the software needed to run it remains far beyond the budget of most small farms, meaning the benefits so far have been concentrated among large agricultural operations rather than distributed evenly across the farming sector.