49 Which of the following statements is supported by the example of non-human animals?
(A) The naturally given state of health and vigor, rather than human behaviors, is the key to health.
(B) Animal foods, rather than the naturally given state of health and vigor, are the key to health.
(C) Habits and behaviors, rather than medicine and health insurance, are the key to health.
(D) Medicine and health insurance, rather than animal foods, are the key to health.

People nowadays speak often about their “right” to health. Paying a lot for the medicine and national health insuranc保險. they complain about not getting all they think they are paying for, a guarantee保證 to endless betterment改進. To me, their disappointment is rooted從…發展而來 in a mistaken belief相信；信心 that medical interventions介入、處遇 and the government’s policy are responsible for the most substantial大的；可觀的；價值巨大 improvement in public health. They do not realize that health is primarily主要地 heir duty, not medicine’s or government’s responsibility.

First of all首先, many people believe that society’s level of health depends on medical treatment of the sick. But the relationship between increased investment投資 in medicine and improvements in health is tenuous（關係、想法、形勢等）不確定的. Behavior usually has more to do with how long and healthily people live than does the soaring快速上升 investment in medical treatments. Scientists have noted that other animals instinctively本能的，直覺 eat the right foods (when available) and act in such a way as to maintain their naturally given state of health and vigor精力. Other animals do not overeat, under sleep, knowingly ingest攝取，嚥下（食物）toxic substances材料, 物質, or permit允許，准許 their bodies to fall into disuse閒置，廢棄 through sloth沒有努力, 懶散, watching television, riding in automobiles, etc. And if it is a mistake to assume that medicine, rather than prudence審慎,慎重, is the path to health, it is unwise to overemphasize過分強調 national health insurance. In fact, national health insurance might do harm by reinforcing加固 public neglect疏忽照顧；忽視 of personal responsibility for health. Moreover, insurance plans spread the burden of paying for illness. The prudent and dutiful are paying heavily for the irresponsible不負責任. That is a wrong which should preoccupy使全神貫注 people who are eager to establish “rights” where health is concerned.