Question

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

(a) shade()

(b) grayscale()

(c) black()

(d) brightness()

I got this question in examination.

My question is taken from CSS Functions topic in chapter CSS Fundamentals, Colors and Styling of CSS

Answer 1

Correct answer is (b) grayscale()

To elaborate: A decimal value between 0 and 1 or percentage up to 100% controls the extent of the gray effect.