When people ask Sandra why she smokes, she tells them that it's just too difficult to stop. This suggests that Sandra

The correct answer is - addicted to nicotine.

Explanation:

Addiction to smoking is related to the consumption of nicotine. Regular smoking or vaping nicotine releases the dopamine hormone in the brain. Dopamine trains the brain and neurons to repeat the activity again and again which leads to the addiction to nicotine as dopamine is a rewarding hormone. This addiction to the nicotine makes an individual like Sandra keep on smoking and make it tough to quit it.

Thus, the correct answer is - addicted to nicotine.

the old way of life was represented by superstition, an angry god, and absolute submission to authority. the thinkers of the age of reason ushered in a new way of thinking. this new way championed the accomplishments of humankind. individuals did not have to accept despair. science and reason could bring happiness and progress. kings did not rule by divine right. they had an obligation to their subjects. europeans pondered the implications for nearly a century. americans put them into practice first.