I believe it is A due to "The lady made detailed plans, engaged the caterer and the orchestra well in advance" isn't exactly connect well and be hard to understand so you'd put a comma between "caterer, and".
This isn't asking a question, it's telling you what you should include in a fictional story. A fictional story is one that is made up, yet it can be based off of or have the idea of a true story.
Answer:
The Answer is the bottom definition: Not clean or pure.
Explanation:
The prefix im- has a negative meaning, so impure means not pure.