Correct Option :- (A) y = f(|x|)
Explanation :-
(A) y = f(|x|)
Represent a function since line parallel to y-axis cut once
(B) y = |f(x)|
Represent a function since line parallel to y-axis cut once
(C) |y| = f(x)
Not represent a function
(D) y = |f(|x|)|
Represent a function since line parallel to y-axis cut once