Finally, if planes other than commercial airliners are involved in the collisions, the problem of these collisions cannot be solved by a warning system that will not be installed on non-commercial airliners. The argument also does not address what would happen in the event that the warning system collapses, fails, or does not work properly. Because the argument leaves out several key issues, it is not sound or persuasive. If it included the items discussed above instead of solely explaining what the system supposedly does, the argument would have been more thorough and convincing. Solve the problem and indicate the best of the answer choices given.
All numbers used are real numbers.
A figure accompanying a question is intended to provide information useful in solving the problem. Straight lines may appear jagged. All figures lie in a plane unless otherwise indicated. You have to decide whether the data given in the statements are sufficient for answering the question. All numbers used are real numbers.