Forget all other questions answer this
the principle of floral design that uses the ratio 3: 5: 8 is
a. balance.
b. proportion.
c. unity.
d. rhythm.

The answer is: [B]: "proportion" .

Specifically, this refers to the Fibonacci series:

                          →   " 1:1:2:3:5:8:13" ;

                          →  {Note: "bolded text" is for emphasis.}.

Note: The sequence is written in "ratios" ; or "proportions" .

          →  { hence;  Answer choice: [B]:  " proportions " . } .

                   →  { Take note of the "colon" symbols used. } .