px
in
em
pt
Answer is Wrong!
Answer is Right!
The correct answer is C. em.
An em is a unit of measurement in typography and page layout equal to the height of the current font’s capital M. It is used to define the size of other elements, such as line spacing and font size.
A point (pt) is a unit of measurement equal to 1/72 of an inch. It is used to measure the size of type and other elements on a page.
An inch (in) is a unit of measurement equal to 2.54 centimeters. It is used to measure the size of paper and other objects.
A pixel (px) is a unit of measurement equal to one picture element. It is used to measure the size of images and other elements on a screen.