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
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Answer:
coordinating conjunction is a word that joins two elements of equal grammatical rank and syntactic importance. They can join two verbs, two nouns, two adjectives, two phrases, or two independent clauses. The seven coordinating conjunctions are for, and, nor, but, or, yet, and so.
Answer: The dank tropical night that was palpable as it pressed its thick warm blackness in upon the yacht.
Explanation: This is a form of personification, because the sentence states that the tropical forest is pressing a thick warm blackness on the yacht. Personification is giving human like qualities to inanimate objects.