To find the ratio of pink beets to red beets, we start by identifying the number of each.
- Number of pink beets = 4
- Number of red beets = 5
The ratio of pink beets to red beets can be calculated as follows:
\[ \text{Ratio} = \frac{\text{Number of pink beets}}{\text{Number of red beets}} = \frac{4}{5} \]
Calculating the ratio:
\[ \frac{4}{5} = 0.80 \]
Now, rounding to the nearest hundredth, we have:
\[ 0.80 \]
Thus, the ratio of pink beets to red beets, represented as a decimal rounded to the nearest hundredth, is 0.80.
The correct answer is C) 0.80.