Answer:
C
Step-by-step explanation:
It draws the blue square at coordinates (100,0) 50 pixel wide, and in the lower-left corner. You should know that the lower-left corner of the square should be at position x, y. Hence, the answer.
And this is true for any shape that you draw using turtle graphics in Python.
You should also know the function format of python, and how it is defined, declared and called. The penup command tells the turtle to not show what is drawn, or hide the ink. The pen down is just opposite to this.
The count is an inbuilt function that counts and can be used as above with range to create a for the look. forward moves the cursor according to width mentioned.
See how to pen down is called before beginning fill. And how we move to x,y using go to, and how the penup is used to hide ink while fill color is in effect, and we move to x,y.
End fill ends the process.