The option is B.
The parent function is the BASIC function. Familiarity with the basic characteristics of these simple functions and their graphs will help you analyze the shapes of more complicated graphs. The equations of some of the parent functions are given by:
1. Constant function:
[tex]f(x)=c[/tex]
2. Identity function:
[tex]f(x)=x[/tex]
3. Absolute value function:
[tex]f(x)=\left | x \right |[/tex]
4. Square root function:
[tex]f(x)=\sqrt{x}[/tex]
5. Quadratic function:
[tex]f(x)=x^{2}[/tex]
