The problem is asking to simplify:

$\frac{\sqrt{64}}{\sqrt{16}}$

We can simplify this by first evaluating the square roots:

$\sqrt{64} = 8 \quad \text{and} \quad \sqrt{16} = 4$

Thus, the expression becomes:

$\frac{8}{4} = 2$

So, the correct answer is 2.

Would you like more details or have any further questions?

Here are five related questions you might find useful:

1. What is the general rule for dividing square roots?
2. How do we simplify expressions with variables inside square roots?
3. What happens if the number inside a square root is negative?
4. How do you simplify cube roots compared to square roots?
5. Can you simplify expressions with multiple square roots and addition?

Tip: When simplifying square roots, always check if the number can be reduced by taking the square root directly. This helps speed up the simplification process.