It is either A or D. It is definitely not B or C though. I would choose A.
Answer:
They can be searched using keywords.
Explanation:
Invaluable means value less scan means scanning
Hamlets mothers name is Gertrude
The identity an author creates for himself in a story is known as his , This answer is stated in the analysis of the Mark Twain story "THE PRIVATE HISTORY OF A CAMPAIGN THAT FAILED
Answer: Persona
