Correct option is D
We need to evaluate the expression:

Step 1: Solve the Nested Radical Part
Let:

Since the nested radical continues infinitely, we can rewrite it as:

Solve for x
Squaring both sides:

Rearrange:

Step 3: Solve the Quadratic Equation
The quadratic equation:

can be factored as: (x−3)(x+2)=0
Setting each factor to zero: x − 3 = 0 => x = 3
x + 2 = 0 => x = −2
Since xrepresents a square root, it must be non-negative. Thus, we take:
x = 3
Add 6 to the Result
Now, we compute:
6 + x = 9
6+ 3 = 9

