Hey there!
I would say the answer to this question is <u>Movement</u>.
If you look at the principles of design the definition of Movement is <u>Movement is the path the viewer's eye takes through the work of art, often to focal areas.</u>
In Cathy's design, it states that when viewers view her website their eyes first fall on the brand name, and then they view the bright images on the page.
Based on the information given you can conclude that the design principle that Cathy used was <u>Movement</u>.
I hope this helps,
Have a great day!
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The missing line would be x+= num
This means that every time a number is selected from the range it is added to the value of x.
