A Survey Will Be Conducted to Compare the Grade Point

A survey will be conducted to compare the grade point averages of US high-school students from four different school districts. Students are to be randomly selected from each of the four districts and their grade point averages recorded. The ANOVA model most likely to fit this situation is: $\begin{array}{|l|l|}\hline \text { A. } & \text { one-way ANOVA. } \\\hline \text { B. } & \text { two-way ANOVA. } \\\hline \text { C. } & \text { randomised block design. } \\\hline \text { D. } & \text { complete } 4 \text { f factorial design. } \\\hline\end{array}$