So we have to make the assumption that watching your twin is the same as watching yourself and make that connection with the stimulus? Its an easy answer if you assume that but that kind of idiotic to assume that your twin=you.

@sesh561 this is the best explanation

/ capable make changes -> / capable of complex reasoning

capable of complex reasoning -> capable make changes

This is one of those questions where AC C doesn't strongly support the argument, but every other AC is so bad and irrelevant that you have no choice but to choose AC C.

I got it right, but this is a stupid question lol.

I find it easiest to skip the first 2 sentences and take the contrapositive of the next sentence so you can make it all positive. Switching "if a public space is uncomfortable it is not well designed" into "if it is well designed, it is comfortable." Then, just assign the "a - b - c = a - c" logic to "well designed - comfortable - spacious interiors = well designed - spacious interiors. " This gives you D relatively easily.

@EllieBBBB I just highlight part of it when its wrong, but having the hide button back would be nice.

@CMRT Yes

If people who have a genetic predisposition to Parkinson's have the same or less iron in their diets than people without the predisposition, wouldn't that just prove that genetics is a factor and not the iron intake? I got it right because the other answers are very wrong and this ones questionable but I don't understand at all how that's a strengthener?