When considering the use of speakerphone amongst other people, the author of the text makes the point against it and argues that headphones, instea...

When considering the use of speakerphone amongst other people, the author of the text makes the point against it and argues that headphones, instead, could be used, but that would be only a partial solution because

A) others would still hear one part of the talk.
B) strangers could interfere in the discussion.
C) the speaker might be in danger, revealing too much.
D) the caller might become the object of memes.