Answer:
Extraterrestrials are scary and dangerous.
Explanation:
An opinion is something that is subjective and that you cannot support with facts or evidence. All three of the other statements are facts because you can support them with evidence. The last statement, however, is purely an opinion because no one can prove that extraterrestrials are scary and dangerous.
Leon Trotsky was a Jewish Bolshevik who was a feared Red Army general known for his brutality, in time he would eventually be eclipsed by Joseph Stalin, relocate to Mexico, and then eventually be assassinated supposedly by agents sent by Stalin brutally with an ice pick. <span />
I think it is D because an experienced hiker would wear something more appropriate for the climate that they would be hiking in.
Hope this helps :)