Final answer:
The expression $$\sqrt{3}/\sqrt{x-4}$$ is already in its simplest radical form, so the correct answer is Option A, which is $$\frac{\sqrt{3}}{\sqrt{x-4}}$$.
Step-by-step explanation:
The student's question involves simplifying the expression $$\sqrt{3}/\sqrt{x-4}$$ to its simplest radical form. Reviewing the options provided (A, B, C, D), we can see that the expression is already in its simplest form as a fraction of two square roots.
Thus, the correct answer to the student's question is Option A, which is $$\frac{\sqrt{3}}{\sqrt{x-4}}$$ in simplified radical form. It's important to note that the other options provided are not equivalent simplifications of the given expression.