What color indicates to choke the engine or turn on lights?

The correct answer is orange, as this color is universally associated with caution and serves as a notable indicator for various machine functions. When referring to the context of machines, particularly in equipment like tractors, orange typically signifies controls that require attention, such as chokes or lights. This makes it clear to operators that activating these functions is important for the safe and efficient operation of the tractor.

In contrast, red is often reserved for stop signals or alert warnings, suggesting that a critical issue needs immediate attention. Yellow usually indicates general caution, warning operators to be careful but does not specifically point to functions like choking an engine or turning on lights. Green is typically linked to safe operating conditions or active operations, indicating that all systems are functioning normally. The specific use of orange in the context of machine controls helps ensure that operators can quickly and effectively identify actions required for optimal performance.