Which tools are used in connection with operations 2 and 3?

The choice of a brush as the correct answer is significant because it indicates a focus on tasks that require cleaning, maintenance, or fine detailing, which are often integral to operations in a train maintenance or repair context. A brush can effectively be used for various cleaning activities, such as clearing dust and debris from surfaces, ensuring that equipment operates smoothly and is safe for train operation.

In terms of operational practices, cleanliness and maintenance are crucial for safety and efficiency in train operations. A brush helps in maintaining the cleanliness of tools and work areas, thereby contributing to an organized working environment, which is essential for any operational process.

While shovels and rakes pertain more to heavy-duty earth-moving or landscaping tasks, and screwdrivers and pliers are typically associated with assembly and disassembly rather than cleaning efforts, a brush’s role in maintenance aligns more closely with ongoing operational support. The crowbar and mallet, primarily used for demolition or applying force to remove stubborn components, may not be as relevant in a context focused on lighter maintenance operations, making them less applicable.

Therefore, the use of a brush is aligned with the necessary operations for maintaining optimal conditions within the train's operational framework, reinforcing its importance in ensuring safety and functionality.