The highlighted part of the sentence is called a/an Professor Plum , who had been to the mansion before , expertly navigated the maze of rooms andcorridors to quickly reach the conservatory
I think this is what you are wanting to know. You would use a not an If the word/name (Professor Plum) would have been something starting with a vowel instead, you would use an
Is this what you were asking?
The sentence which most improve the sentence by adding description is this: 'there are plenty of vegetables, flowers, and plants at the community garden where I work. This sentence is descriptive in nature and tell us some of the charactersitics of the place where the speaker works.
Answer: I'm not exactly sure what your question is, but I'm maybe thinking you want know who is speaking in this story and that is ''First person Narrator''. That means that the Narrator in the story is point of view from a person telling their story or a story they made up, and not only that, it could also mean that the story is narrated by one character at a time. It's possible this character might be talking him/herself or sharing an event that they've experienced.
That's all I could help you with. Hope this is what your looking for. Have a fantastic day my friend! :)
The answer to your questions is D.
I hope this helps! <3
