Why is the Professor so sure Ned Harviss will help him with his manuscript? The Professor knew that Ned sometimes published science books.
Ned and the Professor were interested in the same types of books.
The Professor knew it was likely that Ned had outgrown his wildness.
Ned and the Professor used to have adventures together in college.

The professor and Ned Harviss had many adventures together during college and for that reason, the professor knew that there was a big possibility that Ned could help him with the new manuscript.

This certainty was intensified when the professor went to meet Ned and realized that his friend received him very warmly, showing that he was still interested in venturing along with him.

This question is related to the short story "The Descent of Man" by Edith Wharton. In this story we can see the following facts:

Based on this, we can conclude that the professor hoped that Ned would help him with the manuscript, as he remembered how adventurous he and Ned were and the publication of this manuscript would be a great adventure for them.

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i think that the quotes in paragraph 11 contribute to the development of ideas because it provides a good reasoning of the central idea of the text.

sentences vary by structure as well as by function. there are compound, complex, and compound-complex sentences.

simple sentence

i like to read.

a simple sentence has one independent clause.

compound sentence

i like to read, and i also like to write.

a compound sentence includes more than one independent clause, connected by a coordinating conjunction (and, but, for, nor, or, so, or yet).

complex sentence

i prefer to read books that are bestsellers.

a complex sentence includes one independent clause and one or more dependent clauses. (a dependent clause is one that cannot stand alone.) types of dependent clauses include relative clauses (i kicked the boy who pinched me), adverb clauses (i am going home now because i have a curfew), and noun clauses (i don't know what to do next).

compound-complex sentence

although i prefer to read current bestsellers, i do like to read old agatha christie mysteries, and i also like some 20th-century science fiction.

compound-complex sentences take a bunch of clauses (multiple independent clauses, and one or more dependent clauses) and toss them together like a salad. although these sentences take practice to write in a grammatically correct fashion, they can hold a tremendous amount of meaning, and are common in academic writing.