Final answer:
The function f(x) is obtained by removing the second bit from x and placing the bit at the end of the string.
Step-by-step explanation:
The function f(x) is obtained by removing the second bit from x and placing the bit at the end of the string.
For example, if we have f(101), we remove the second bit (0) and place it at the end of the string, giving us 110.
Therefore, the correct description of the function f is: f(x) is obtained by removing the second bit from x and placing the bit at the end of the string.