An example of parallel choices in a key is
a. flower color is red; aa. flower color is blue
a. object can fly; aa. object is black
a. animal has 4 legs; aa. animal has 4 teeth

The answer that would best complete the given statement above would be the first option. An example of parallel choices in a key is A. flower color is red; AA. flower color is blue. This is parallel in a way that both are flowers and the difference is parallel because red and blue are both colors. Hope this helps.

Ithink all of these events