How does doubling the participants affect the number of monitors needed?

Doubling the participants typically leads to an increase in the number of monitors required to effectively supervise and manage the larger group. This is due to several factors. First, more participants generally mean that there are more individuals to observe and assess, ensuring safety and adherence to standards during training or testing.

Additional monitors are necessary to provide proper oversight, guidance, and support to participants, ensuring that the training is conducted effectively and without any safety hazards. Each monitor can only oversee a certain number of participants at a time, so as the group size grows, so does the need for more monitors to maintain an appropriate ratio. This ensures that all participants receive adequate attention and instruction.

The other options suggest either a decrease in monitors or no change, which does not align with the logistical needs of managing a larger group effectively. Therefore, the correct response reflects the realistic requirements of scaling up participant numbers within a monitored setting.