Answer: Pearl should avoid studying in her bedroom at all. A desk with a well-cushioned, ergonomic swivel chair in another room would be perfect for her needs, since she would get all the comfort without the excessive relax that a bed or even a sofa would offer. If she insisted on using a sofa, though, it would be advisable to add one of those special sofa-tables where she could place her notes and rest her arms, since this makes the "sofa experience" feel closer to an academic activity and is likely to enhance her focus.
A non-restrictive modifier add information that does not restrict who the subject can refer to (compare to "The one Marlena that enjoys many subjects" -this one restricts the subject to a specific Marlena). Here it's "who enjoys many different subjects" - it adds additional information about her, but doesn't change the referent.
Answer: the way he only used short sentences when the prisoners were talking to the doctor or to each other way have been used to show how they were to weak or scared to talk a lot.
hope this helps
