Answer:
C. the string literal "blue" is assigned to the string reference color .
Explanation:
String literal here is blue which is a sequence of characters b, l, u, e.
Also a string literal is enclosed in double quotation marks.
So option A is wrong because string literal here is "blue" and not color.
In this statement the string literal blue is not being concatenated rather the string literal is being assigned to the string reference color. So option B is wrong too.
Assignment operator = is used here to assign this string literal to color.
Now if we print color, the output displayed is "blue" as the color string reference holds blue string literal.