What type of maneuver should a driver be ready to make if necessary while driving?

A driver should be ready to make an evasive maneuver if necessary while driving. Evasive maneuvers are actions taken to avoid an obstacle or potential collision; they often involve sudden steering adjustments or braking to navigate around a hazard. This is particularly important in situations where unexpected events occur, such as another vehicle swerving into your lane or an object falling onto the road.

Being prepared to take evasive action reflects a driver's awareness of their surroundings and commitment to safety. It is essential for avoiding accidents and protecting both the driver and other road users. Understanding the need for quick, decisive actions during emergencies is a key aspect of defensive driving.

The other options do not align with safe driving principles. Aggressive driving can lead to dangerous situations and often results in road rage or collisions. "Semi-dangerous" is not a recognized term in driving contexts, and unlawful maneuvers pose serious legal ramifications and risks to safety. Hence, being ready for an evasive maneuver is vital for effective and responsible driving.