Which of the Following Was NOT a Major Factor in Explaining

question 42

Multiple Choice

Which of the following was NOT a major factor in explaining the decline of death rates in the U.S. in the late 19^th and early 20^th century?

• A) urbanization
• B) improvements in sanitation
• C) improvements in medical treatments
• D) Both a and c are correct.

---

Definitions:

Electrical Phenomenon

Events or processes that involve the movement or interaction of electric charges.

Action Potential

is a rapid increase and subsequent decrease in voltage across a cellular membrane, typically in a neuron, that occurs when a neuron sends information down an axon.

Peak Voltage

The maximum absolute value of voltage in a periodic waveform, indicating the highest point the voltage reaches.

Persisting Positive Charge

A lasting electrical charge characterized by an excess of protons, often seen in certain particles or materials.