Question

seat belts are not effective:
when traveling faster than 40 mph
seatbelts are always effective
at slow speeds

Explanation:

Seat belts are designed to reduce injury risk in collisions, regardless of speed (slow or above 40 mph). The statement "Seatbelts are always effective" is correct as they provide protection by restraining occupants, reducing the chance of being ejected or hitting interior parts, even if effectiveness can vary by collision type/severity, but they still offer benefit. The other options are incorrect: seat belts are effective at all speeds, including above 40 mph and at slow speeds.

Answer:

B. Seatbelts are always effective (assuming the options are labeled A, B, C with A: When traveling faster than 40 mph, B: Seatbelts are always effective, C: At slow speeds)