Answer: The correct option is (D) (18, 8).
Step-by-step explanation: Given that the value of an explanatory variable is 18, while the corresponding value of the response variable is 8.
We are to find the co-ordinates of this data plot when plotted on a scatter plot.
Let y = f(x) be a function, where x is the independent variable and y is the dependent variable.
On a scatter plot, we plot any point satisfying this function as (x, y).
Explanatory variable = independent variable, x = 18
and
Response variable = dependent variable, y= 8
Therefore, the required coordinates of this data point when plotted on a scatter plot are (18, 8)
Option (D) is CORRECT.