Commercial passenger airplanes can be equipped with a collision-avoidance radar system that provide with information about the proximity of other airplanes. Because the system warns pilots to take evasive action when it indicates a possible collision, passengers are safer on airplanes equipped with the system than on comparable airplanes not so equipped, even though the system frequently warms pilots to evade phantom airplanes.
Stimulus: commercial passenger airplanes can be equipped with a collision-avoidance radar system that provides the information on the proximity/ distance of planes in the air. Because these systems warn pilot to take evasive action when it indicates a possible collision it is safer on airplanes equipped with the system than on comparable airplanes which do have this radar system.
Which one of the following, if true, most strengthens the argument?
(A) Evasive action taken in response to the system’s warning poses no risk to the passengers.
Correct(B) Commercial passenger airplanes are in greater danger of colliding with other airplanes while on the ground than they are while on flight.
weakens the argument(C) Commercial passenger airplanes are rarely involved in collisions while in flight.
weakens the argument(D) A study by ground-based air traffic controllers found than 63 percent of the warnings by the system were invalid.
weakens the argument(E) The collision-avoidance radar system is run by a computerized device on the plane that scans the sky and calculates the distances between planes.
Adds info but does not strengthen or weaken