What are two key actions a coach must take when directing members in a tread block?

In the context of directing members during a tread block, the key actions that are essential for effective coaching involve creating a clear understanding of the workout while ensuring that participants know what to expect. When a coach provides both a forecast and an overview, they are setting the stage for the workout.

Forecasting involves preparing members for the types of exercises or intervals they will be performing. This is important because it helps to mentally prepare participants, allowing them to anticipate the challenges and pacing strategies needed for the workout ahead. Meanwhile, an overview provides a breakdown of the workout structure, including specifics like time durations, the number of intervals, and transitions between different activities. This clarity helps the members feel more confident and focused, facilitating better performance.

While the other options are important elements of coaching in general, they do not encapsulate the initial directives that are crucial in a tread block. For example, demonstrating and explaining are essential teaching techniques that follow the forecast and overview stage; monitoring and adjusting relate to the coach's responsiveness during the workout; and encouraging and supporting are vital for maintaining motivation. However, providing a clear forecast and overview lays the groundwork for a successful workout session.