To determine when the rock hits the water, we need to find the time \( t \) when the height \( h \) becomes 0. The equation given is:
\[ h = -4.9t^2 + 10. \]
To find when the rock hits the water, we set \( h \) to 0:
\[ 0 = -4.9t^2 + 10. \]
Rearranging this gives:
\[ 4.9t^2 = 10 \quad \Rightarrow \quad t^2 = \frac{10}{4.9} \quad \Rightarrow \quad t^2 \approx 2.04. \]
Taking the square root of both sides gives:
\[ t \approx \sqrt{2.04} \approx 1.43 \text{ seconds.} \]
Since the rock hits the water in approximately 1.43 seconds, a reasonable scale for the range of time (t) in a table would be from 0 to around 2 seconds. Given the options provided, each representing a different scale increment, a scale of 1 (such as 0, 1, 2) would be reasonable.
Thus, the best response among the provided options is 1.