Answer: option e.
Step-by-step explanation:
Given the list of data:
![12, 18, 21, 25, 30, 43](https://img.qammunity.org/2020/formulas/mathematics/middle-school/2o479hvnz0y92lfjsquairkmsvt57p96ey.png)
We do not need to arranged the numbers, because they are already arranged from least to greatest. You can observe that there are an even number of data (because they are six numbers), then, we must calculate the average of the middle two numbers in order to find the median.
This is:
![median=(21+25)/(2)\\\\median=23](https://img.qammunity.org/2020/formulas/mathematics/middle-school/6xdis8y49t92ihug65nb67d3ooflk03t0d.png)