Hi FerociousStorm,You've actually spotted the exact word that makes E feel wrong, so let's start right there, because that word is doing something you'd want it to do.
Why "anxiety" in E is not off-topic. E isn't switching the subject to anxiety. It's naming the
cause that might be faking the depression result. Remember the setup: these patients were living in the facility and were then
relocated back home. E says the new surroundings "could otherwise have caused severe anxiety" - and that transition anxiety is a plausible reason the home patients showed
more depression bouts. So the cause (adjustment anxiety) and the measured outcome (depression bouts) are different words on purpose - one is triggering the other.
That's why E lets you
assess the conclusion:
- If the study period
was long enough to acclimatize - the extra depression really reflects the home environment - the conclusion holds.
- If it
wasn't long enough - the extra depression is just transition stress, not the home environment - the conclusion falls apart.
An "assess the validity" answer must swing the conclusion both ways like this. E does exactly that.
Why D can't do that. Here's the quiet problem: the passage never says these patients are on anti-depressive medicine at all. D only matters
if you first assume medication is part of the experiment - an outside detail the stimulus never gives you. You're right that dosage
would affect symptoms in real life, but that's exactly the trap: you're importing a fact the argument didn't state. D also just reports a control that's already "the same" for both groups, so it doesn't test the core question - whether the
environment caused the difference.
A quick way to feel the E logic: a plant moved into new soil starts wilting. Is the soil bad, or is it just replant shock? Give it enough time - if it
still wilts, blame the soil; if it wasn't given time, you learned nothing. Swap "wilting" for depression bouts and "replant shock" for transition anxiety, and that's precisely what E is checking.
Answer: EFerociousStorm
I feel like D should be the answer. Option E talks about anxiety, not Depression. In the passage, nowhere has anxiety been even mentioned. Also dosage change Directly correlates to new symptoms or lack of existing ones