Final answer:
In speed zones of 45 MPH or less, you must signal your turn continuously during the last 100 feet before turning, which is option (a). Signaling helps notify other drivers and pedestrians of your intentions, improving road safety.
Step-by-step explanation:
In speed zones of 45 MPH or less, you must signal your turn continuously during the last 100 feet before turning. The correct answer to the student's question is option (a) 100 feet. It's vital for drivers to signal their intentions for the safety of all road users. This rule gives other drivers and pedestrians adequate time to anticipate your vehicle's movement and react accordingly.
Ignoring posted speed limits and failing to signal properly are both behaviors that can lead to accidents at intersections. By signaling for at least the last 100 feet, drivers can communicate their plans to turn, reducing the likelihood of an accident. The specifics of these rules can vary by jurisdiction, so it's always best to consult local traffic laws, but 100 feet is a common standard.