The question is incomplete as it does not have the option which are:
Answer:
Line chart
Explanation:
The line chart is the statistical representation of the data which is represented in the form of a line. The line chart can be plotted easily to represent the changes taking place in a very short period of time.
Since the potato plant grows very slowly in a short period of time, therefore, can be plotted in the form of a line graph. The length of the plant can be plotted on the y-axis whereas the time can be plotted on the x-axis.
Thus, Line chart is correct.