ummmmmmmmmm i didnt watch that sorry :(
A. because they turn opaque(white).
Answer: Proportion is the relationship of two or more elements in a design and how they compare with one another.
Explanation:
Proportion is said to be harmonious when a correct relationship exists between the elements with respect to size or quantity. Good proportion adds <em>harmony, symmetry</em>, or balance among the parts of a design.
