11.
Which of the following element is used by the filter property to blur the images?

12.
Which of the following function adjust the brightness of an element’s color, for use by the filter property?

13.
Which of the following function adjusts the difference between light and dark values, for use by the filter property?

15.
Which of the following function converts an element’s color to a shade of gray, for use by the filter property?

16.
Which of the following function flips an element’s colors, for use by the filter property?

17.
Which of the following function applies a saturation effect to an element’s color, making it appear more or less vivid, for use by the filter property?