Answer
$\color {red} {\text{Radical Function}}$
Work Step by Step
$\text{Explanation:}$
A Function that includes the independent variable under the radical sign $\color {blue} {\surd} $ is known as $\color {red} {\text{Radical Function}}$.
$\text{For Example:}$
$y=\sqrt x$
$y=\sqrt[3] {x-4}$
$y=\sqrt[3] {x-4}+5$
Where
$\color {red} {\surd} \Rightarrow $$\color {red} {\text{Radical Sign}}$
$\color {blue} {^3} \Rightarrow $$\color {blue} {\text{Index}}$
$\color {Green} {x-4} \Rightarrow $$\color {Green} {\text{Radicand}}$
Hence the Correct Answer is $\color {red} {\text{Radical Function}}$
