Answer:
have concluded
Explanation:
a compound subject requires a plural verb
Revision involves clarifying purpose and meaning.
All other choices would be incorrect because they are a part of the process of editing.
Answer:
What does “encryption” mean?
What is “public key cryptography”?
What kind of encryption was available a long time ago?
What are “key distribution problems”?
What are “cryptanalysts”?
Explanation:
