Brainliest! read the excerpt from the code book. despite the enormous strength of rsa and other modern ciphers, cryptanalysts are still able to play a valuable role in intelligence gathering. their success is demonstrated by the fact that cryptanalysts are in greater demand than ever before—the nsa is still the world's largest employer of mathematicians. what is the central idea of this paragraph? a. many math experts work for the national security agency. b. the rsa computer system makes our country more secure. c. skilled people are still important national security workers. d. computers are better than people at keeping the nation safe.

C) Skilled people are still important national security workers.

Explanation: In the given excerpt from "The Code Book" we can see the development of the claim that cryptanalyst are still able to play a role in intelligence gathering, and that this is demonstrated bay the fact that they are in greated demand than ever before and that the NSA is the largest employer of mathematicians, based on this information, we can see that the central idea of the paragraph is that skilled people are still important national security workers.

d) the narrator even suggested that the white whale, moby d, was ubiquitous and present in every ocean at every moment.