PLEASE HELP ME OUT ! Which mode of narration is apparent in the last two lines of this excerpt from Jane Austen's Pride and Prejudice?

Not all that Mrs. Bennet, however, with the assistance of her five daughters, could ask on the subject, was sufficient to draw from her husband any satisfactory description of Mr. Bingley. They attacked him in various ways—with barefaced questions, ingenious suppositions, and distant surmises; but he eluded the skill of them all, and they were at last obliged to accept the second-hand intelligence of their neighbour, Lady Lucas. Her report was highly favourable. Sir William had been delighted with him. He was quite young, wonderfully handsome, extremely agreeable, and, to crown the whole, he meant to be at the next assembly with a large party. Nothing could be more delightful! To be fond of dancing was a certain step towards falling in love; and very lively hopes of Mr. Bingley's heart were entertained.
a. first person
b. third person omniscient
c. free indirect speech
d. third person limited

Free indirect speech is a style of third-person narration. This style uses some of the characteristics of third-person, along with the "essence" of first person direct speech. Therefore, it represents a compromise between the characters and the narrator, as it shows the character speaking through the voice of the narrator. In this case, although the characters are not directly speaking, the narrator's statements ("Nothing could be more delightful! To be fond of dancing was a certain step towards falling in love") mimic the characters' dialogue almost perfectly, with little intervention from the narrator.