Choose the word that is a necessary part of the underlined word.
directory

A. telephone

B. listing

C. computer

D. names

Answer: Option B

Solution(By Examveda Team)

A directory is a listing of names or things, so (choice b) is the essential element. A telephone (choice a) often has a directory associated with it, but it is not essential. A computer (choice c) uses a directory format to list files, but it is not required.Names (choice d) are often listed in a directory, but many other things are listed in directories, so this is not the essential element.