For which situation is it essential to swerve while riding?

Answer: B — To avoid an obstacle in your path

Swerving is an important evasive maneuver used to avoid obstacles that may suddenly appear in your path while riding. When encountering an unexpected object—like a pothole, debris, or another vehicle—swiftly swerving can help prevent a collision and keep you safe. This skill requires quick reflexes and the ability to maintain control of the motorcycle, as swerving can significantly change your direction of travel. In contrast, approaching a stop sign typically requires gradual deceleration and not evasive maneuvering; changing lanes involves signaling and checking for traffic rather than swerving; and signaling to other vehicles involves using turn signals to communicate your intentions without abrupt movements. Therefore, swerving is primarily essential when an obstacle poses an immediate threat and there is no time to stop safely.