Which of the following units of measurements are directly associated with the font sizing in CSS?  Select all that apply.  1 pointrem  em  vw ch

The units of measurements that are directly associated with the font sizing in CSS are:

1. rem
2. em
3. vw
4. ch

All of these units can be used to define font sizes in CSS.

• 'rem' stands for "root em". If you define the font-size in rem, it is calculated relative to the root element (html).
• 'em' is relative to the font-size of its closest parent. If you use it to define font-size, it will be relative to the font-size of the parent element.
• 'vw' stands for "viewport width". It means that 1vw is equal to 1% of the viewport width. So, if you use it to define font-size, it will be relative to the width of the viewport.
• 'ch' represents the width of the "0" (zero) character. So, if you use it to define font-size, it will be relative to the width of the "0" character of the current font.