Final answer:
The correct statement that indicates an understanding of nicotine tolerance is 'c - "Smokers develop tolerance to nausea and dizziness."' as tolerance to these side effects can develop with regular nicotine use. However, nicotine still poses sustained cardiovascular risks.
Step-by-step explanation:
The student's understanding of nicotine tolerance is reflected in their responses to certain statements. From the provided options:
- c - "Smokers develop tolerance to nausea and dizziness." This statement indicates an accurate understanding of nicotine tolerance, as over time, regular users of nicotine can develop tolerance to some of its negative side effects, such as nausea and dizziness.
However, the other provided statements contain inaccuracies:
- a - "All of the side effects from nicotine will go away after time." Not all side effects may dissipate, especially considering the sustained cardiovascular risks associated with nicotine use.
- b - "Smokers eventually have the same blood pressure as nonsmokers." This is incorrect because nicotine use can cause a sustained increase in sympathetic activity, which maintains elevated blood pressure.
- d - "The heart of a smoker does not work as hard as the heart of a nonsmoker." This statement is incorrect because nicotine increases the workload on the heart, contributing to the risk of cardiovascular diseases.