1) Human 2) Individual 3) Mortal 4) Person 5) Picker 6) Picky sort 7) Selector 8) Slang for a plagiarist 9) Somebody 10) Someone 11) Soul 1) Optant 2) Picker 3) Selector 
[Mac OS] The Chooser is an application program for Macintosh systems using the original Mac OS. The Chooser started out as a desk accessory and became a standalone application program as of System 7. The Chooser allowed users to connect to AppleShare file servers (via AppleTalk or TCP/IP), enable or disable the network access, and select wh...
• (n.) One who chooses; one who has the power or right of choosing; an elector.
Choos'er noun One who chooses; one who has the power or right of choosing; an elector. Burke. 
Chooser is slang for a plagiarist.
selector noun a person who chooses or selects out