Question

read the sentence below.
the students are working on a mystery message and they have found a computer program to help them with the process of encoding their message.
which word could best substitute the underlined portion of the sentence?
○ cipher
○ decipher
○ encryption
○ cryptanalysis

Explanation:

To solve this, we analyze each option:

• "Cipher" is a method of encoding, but it's a noun, not the process of encoding.
• "Decipher" means to decode, which is the opposite of encoding.
• "Encryption" is the process of encoding information, matching the underlined portion ("the process of encoding their message").
• "Cryptanalysis" is the study of breaking codes, not encoding.

Answer:

encryption