Final answer:
The term "all-or-nothing principle" refers to the phenomenon in which the strength of a nerve impulse remains constant once it surpasses the threshold, regardless of the stimulus intensity. In this principle, all action potentials are uniform in size, and a higher frequency of stimuli leads to an increased number of action potentials rather than larger ones.
The correct answer is: C) All-or-nothing principle
Step-by-step explanation:
The phenomenon where a nerve impulse does not vary in intensity with regard to the strength of the stimulus is known as the all-or-nothing principle. Regardless of how strong the stimulus is, as long as it crosses the threshold, the action potential generated is always the same size.
A stronger stimulus will not result in a 'bigger' action potential; it will only cause action potentials to be initiated more rapidly.
The correct answer is: C) All-or-nothing principle