Yes, I think that works, although I'd add two small thoughts:
1. The some is of course a double arrow, so: Environment <--some--> Recent Grads
2. We also know that no recent grads consider stress level an important factor (as only a few veteran employees consider stress level important). So you'd have another arrow from Recent Grads Stress Level
That second piece doesn't affect the correct answer in this case, but in theory it could, as you could rightly say "some people who consider environment an important factor don't consider stress level an important factor" (as well as other some statements for vacation and salary as they relate to stress level).
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