Answer : The sentences from the excerpt that seems to foreshadow Dexter’s future obsession with “possessing” Judy Jones is -
"He wanted not association with glittering things and glittering people—he wanted the glittering things themselves. Often he reached out for the best without knowing why he wanted it—and sometimes he ran up against the mysterious denials and prohibitions in which life indulges."
Where it is clearly seen that he wants all the best things that was available without the answers of why he wanted them. He always wanted best things or him.
I'm assuming the underlined conjunctions are <em>both </em>and <em>and </em>(because you didn't underline any, and those are the only two conjunctions in the sentence).
Those conjunctions are called correlative conjunctions - this means that they are connecting two items which are equally important. So, this woman saw both Billie Holiday and Ella Fitzgerald - and both of those artists are important to the woman.
1. A. They are well-off financially.
2. B as mentally unstable
3. B. angry
4. C. "I have a feeling it'll be like Africa again before then."
"Today nobody brought his or her instrument" is correct. It is common for people to use "their" in a sentence like this, but "his or her" is the more proper term.