posted by Dulce .
Two students collect information about the number of dandelions in a park. Based on their sampling, they estimate that there are 900 dandelions in the 300-square-meter city park. To determine the accuracy of their estimate, which of the following questions is necessary?
A. What was the range of sizes among the sampled dandelions?
B. How many samples were taken to determine the estimate?
C. What time of day was the sampling conducted?
D. Were the dandelions distributed only in grassy areas?
I think it is D.