Answer:
You did not list your counrty but .Vaccines are the best way we have to prevent infectious disease. A successful immunization program depends on the cooperation of every person. Vaccinations prevent you or your child from getting diseases for which there are often no medical treatments. These illnesses can result in serious complications and even death.
Explanation:
The narrator realizes he cannot find the cat, but doesn't worry too much about it. Later, the police unexpectedly show up to his house. Screaming can be heard coming from inside the walls, and the police break down the wall. So find something similar to that.
America is a nation that unifies Ideas and people is the correct answer.
The central idea of the paragraph from "The Code Book" is expressed by "Breaking the RSA code is the greatest challenge for cryptanalysts."
The meaning of the cryptanalysts is that someone who break the codes.
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 evidenced by the fact that cryptanalysts are in greater demand than ever before—the NSA is still the largest employer of mathematicians in the world.
Hence, the correct answer is "Breaking the RSA code is the greatest challenge for cryptanalysts."
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