In which sentence is the underlined group of words a prepositional phrase acting as an adverb My sister hopes to be one of the finest novelists in the world. My sister and grades gave her a place?

In the sentence "My sister hopes to be one of the finest novelists in the world," the underlined group of Words "in the world" is a prepositional phrase acting as an adverb, modifying "the finest novelists" by providing more information about where she hopes to be recognized as such. The other sentence does not contain a clear prepositional phrase functioning as an adverb.