ANSWER
A) shifts the function up or Down
EXPLANATION
The given function is
[tex]y = f(x) + k[/tex]
The parent function is
[tex]y = f(x)[/tex]
The given transformation is a a vertical translation that shifts f(x) up or down by k units.
If k is negative, the parent function shifts downwards by k units.
If k is positive, the parent function shifts upwards by k units.
The correct choice is
A) shifts the function up or Down