Explanation:

To compare the surface area of a sphere and a cube:

- The surface area of a sphere with radius \( r \) is given by the formula \( 4\pi r^2 \).

- The surface area of a cube with side \( s \) is given by the formula \( 6s^2 \).

- Set these equal to find the relationship: \( 4\pi r^2 = 6s^2 \).

- Simplify to get \( \frac{2\pi}{3} r^2 = s^2 \).

- Since \(\frac{2\pi}{3}\) is approximately 2.094, which is greater than 1, it follows that \( r < s \).

- Correct Answer: Option 4: \( r < s \)