Which Sentences in the Text Below Should Be Combined to Avoid

Which sentences in the text below should be combined to avoid choppiness?
¹ Libraries have had to evolve with the digital age.²Although people still read books, they also spend much of their time on the Internet.³Thus, libraries need to offer computer terminals for conducting research.⁴They also need to offer e-books.⁵Librarians are now called information specialists, and they help patrons navigate the vast resources of the Web.⁶It seems clear that libraries will continue to play an important role in our technologically driven society.

A) Sentences 2 and 3
B) Sentences 3 and 4
C) Sentences 4 and 5
D) Sentences 5 and 6