A subjunctive mood is when someone expresses a condition that is not factual or is ambiguous or doubtful. Thus, the answer is letter B. The speaker stresses out that if someone was taller which is not true because the one he is referring to is not tall.
Answer:
I would think it would be the first one :)
"The natural predators and prey of arachnids in tropical ecosystems"
Explanation:
Because it's the only one that simply says 'arachnids' and not 'brown widow spiders', and instead of specifically saying 'Natural predators' it says 'natural predators and prey'
Good luck on your test! :)