The correct answer is (A).
This question also demands a large vocabulary. The best thing to do if you don't know the meanings of all the words, is to try to rule out the ones you know are incorrect.
The sentence says that Mandisa "was able to buy a boat and sail away". The sentence also implies that this is because her job was high paying so she had a lot of money. The first word should mean something similar to
high-paying and the second word should mean something similar to
a lot.
Let's first look at the first words. "Lucrative" means high-paying, so (A) could be correct.
"Arduous" means difficult; while high-paying jobs are sometimes difficult, they are not alwasy difficult, so we can rule out (B).
"Remunerative" means profitable, so (C) could be correct.
Although many high-paying jobs are powerful, some are not. Being a police officer may be considered a powerful job, but is not always high-paying. So we can rule out (D).
"Immodest" is not related to pay, so we can rule out (E).
We are left with (A) and (C), so let's take a look at the second word. "Audacity" means fearless; this doesn't have anything to do with "a lot".
"Superfluity" means
overabundance or excess implying she has more money than she needs. This fits, so (A) is the correct answer.
