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.
Answer:
he enjoys finding words for his own thoughts on emancipation
It seems that you have missed the necessary options for us to answer this question, so I had to look for it. Anyway, based on the given lines above, the literary device that Sophocles uses in these lines to keep the audience interested is DRAMATIC IRONY. Hope this helps.