The correct answer is: D. Rising Action
Rising action refers to the part of the story wherein your main character did something for the story to progress. In this case, the man's overconfidence has gotten him into a situation that he cannot control. Thus, the story will flow towards a series of events.
Tone , volume, and pace are part of : D. Spoken language
Tone : How soft/harsh is your voice when you speak
Volume : How Loud do you speak
Pace : This marked how fast you speak with your speaking partner
hope this helps
A is the answer if I'm wrong is sorry
If I am understanding the question correctly, the constant or control is what stays consistent throughout the experiment.