Question

________ is the science and practice of safeguarding information through codes. polyalphabetic cryptography scientology cryptanalysis

Answer 1

Cryptography is the science and practice of safeguarding information through codes. 

Information that someone doesn't want someone else to be able to understand is put into cryptography. This stops someone from being able to see the message and depending on what it is about, steal the information. This text is called cipher text.