<span>B.The credit for the decorations is all hers'. Correct: hers</span>
C. Skimming allows you to quickly look for details in a text or get the basic idea of its contents.
<span>Subject - Verb - Direct Object
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I believe the correct answer is the hollow in which the Wright home sat.
The farmhouse was situated away from the rest of the city, in a hollow where nobody liked visiting. This is why obviously Mrs. Wright had no contact with the outside world. Here's a quote from the text:
<em>Mrs. Hale: I stayed away because it weren't cheerful [...]. I've never liked this place. Maybe because it's down in a hollow and you don't see it from the road. I dunno what it is but it's a lonesome place and always was.</em><span><em> (101)</em></span>