Question

Motorcycle-safety courses, offered by a number of organizations, teach motorcyclists important techniques for handling their vehicles and for safely sharing the road with other road users. If more motorcyclists took these courses, there would be fewer serious motorcycle accidents. Data show that 92 percent of the motorcyclists who are involved in a serious motorcycle accident have never taken a motorcycle-safety course.

In assessing whether the data cited provide support for the position taken about more motorcyclists’ taking the courses, it would be most useful to determine which of the following?
Cool, question is asking for what will be helpful to determine the blue above
A) Whether significantly more than eight percent of motorcyclists have taken a motorcycle-safety course Maybe. Leave it on side. No reason to reject
B) Whether it is riskier for a motorcyclist to ride with a passenger behind the rider than to ride alone Too much implied and not enough mentioned in stem. This is overthinking it. Reject
C) Whether the different organizations that offer motorcycle-safety courses differ in the content of the courses that they offer Nothing in the stem talks about different courses. Reject.
D) Whether more than 92 percent of serious motorcycle accidents involve collisions between a motorcycle and another vehicle in motion So what is it's with a crash against a pavement or another vehicle? I don't see how this is relevant.
E) Whether variations in the size and potential speed of a motorcycle influence the risk of a serious accident’s occurring Same as above, no information is provided about size and speed of a motorcycle in the stem or in the course

Answer 1

A) Whether significantly more than eight percent of motorcyclists have taken a motorcycle-safety course

Step-by-step explanation:

It would be very useful to know what percentage of motorcyclists have actually taken a safety course. If that number is much larger than just 8%, for example 30%, then we can conclude that taking the safety really does lower your chances of being involved in an accident.

If only 8% (or a similar number) of motorcyclists have taken any type of safety course, then it would be expected that around 8% of the accidents involved them.

On the other hand, if only 1-2% of the motorcyclists have taken a safety course and 8% of the accidents involve them, then taking the course is a bad idea since your probabilities of having an accident increase.