Final answer:
The best way to declare a section with an h2 heading and three progress elements is option B, which includes an h2 heading and three progress elements with values and maximum values.
Step-by-step explanation:
Best Way to Declare Section with Heading and Progress Elements
The best/proper way to declare a section with an h2 heading and three progress elements is option B:
<h2>Achievements</h2>
<progress value="100" max="100">Progress in this course (100%)</progress>
<progress value="20" max="100">Progress in the Specialization capstone (20%)</progress>
<progress value="70" max="100">Progress in life goals (70%)</progress>
This option includes an h2 heading (Achievements) and three progress elements. Each progress element has a value attribute to represent the progress, and a max attribute to define the maximum value.