Final answer:
The relationship between action potential amplitude and initial depolarization size is a false statement. Action potentials are all-or-none events and have a consistent amplitude every time they occur. option b is answer
Step-by-step explanation:
The statement that the amplitude of an action potential is directly proportional to the size of the initial depolarization that produced it is false. Action potentials function on an all-or-none principle, meaning that once the threshold is reached, the action potential will occur and have the same amplitude each time.
The amplitude of an action potential does not vary with the strength of the stimulus; it is uniform and peaks at the same voltage (+30 mV) regardless of how much a stimulus exceeds the threshold. However, a stronger stimulus may trigger more frequent action potentials, not larger ones. option b is answer