(A) As the number of ski injuries that occur on the slopes decreases, the number of injuries that occur on the premises of ski resorts increases.
---we're talking about percentages, not numbers.
(B) The amount of alcohol consumed per skier increased between 1950 and 1980.
---don't find reference to this
(C) The technology of ski boots and bindings affects the incidence of each type of ski-related injury.
---I don't like this, but I choose this. I infer from the passage that there are only 2 types of injuries when it says: As a result, the remainder
of ski-related injuries.... So for example if percentage X% rises, 1-X% drops.
(D) If the technology of ski boots and bindings continues to advance, the incidence of ski-related injuries will continue to decline.
---Not easy to refute, not easy to infer.
(E) Injuries that occurred on the slopes of ski resorts made up a smaller percentage of ski-related injuries in 1980 than in 1950.
---two possibilities on this one: either I didn't understand the language, or it is a repetition of a sentence of the stem. If anyone could clarify, I would appreciate