Which of the following is NOT one of the factors that contribute to safe and effective training evolutions?

The choice of increasing participant numbers is not considered a factor that contributes to safe and effective training evolutions. In fact, increasing the number of participants can often introduce complexities and risks that may compromise safety. For instance, larger groups can lead to overcrowding, making it harder to manage activities effectively, ensure individual attention, and maintain a safe environment.

In contrast, reducing potential hazards, surveying the training environment, and advising when training may be unsafe are all integral to ensuring safety during training. Reducing potential hazards involves identifying and mitigating risks before they could impact participants, while surveying the training environment ensures that any existing factors that could lead to accidents are addressed. Advising when training conditions may be unsafe empowers trainers and participants to make informed decisions, prioritizing safety above all else. Each of these factors plays a crucial role in maintaining the integrity and safety of the training process.