Division to "Apple"

Tip: Try to recall rules for JavaScript variables rules

Answer: Green is good

1. 2things - starts from digit
2. something4you - valid usage digit
3. my_variable_name - underscore style
4. aaa+bbb - "+" is used
5. variable! - "!" is used
6. #vvv - "#" is used
7. myVariableName - camel style (good practice to lowercase for first letter)
8. MyVariableName - valid but bad practice to uppercase for first letter
9. _uuu
10. uuu_uuu
11. ddd8kjh
12. else - reserved word is used
13. MY_VARIABLE_NAME - valid but starts from uppercase (bad practice) and all uppercase style is recomended to use for constants
14. $item - Hungarian notation. Usually using by jQuery

Read it for details:
JavaScript for Novices: Variables - Variables names