Bunuel
The occurrence of schizophrenia in the general population is 1 percent. If one parent is schizophrenic, however, the incidence rises to 12 percent, and a child with two schizophrenic parents has a 45 percent chance of also suffering from the disease.
Which of the following can be most reasonably inferred from the passage above?
(A) One's risk of developing schizophrenia is greater if one has a schizophrenic grandparent than if one has a grandparent with no diagnosed mental disease.
(B) Early diagnosis of schizophrenia may reduce the severity of the impact of the disease on the patient's life.
(C) One's risk of developing schizophrenia is higher if one has a full sibling with the disease.
(D) Over the past forty years, psychiatrists have advanced significantly in their understanding of the causes and treatments of schizophrenia.
(E) A person's risk of developing schizophrenia is at least partially determined by genetic factors.
The two answer choices are mostly close:
(A) One's risk of developing schizophrenia is greater if one has a schizophrenic grandparent than if one has a grandparent with no diagnosed mental disease.
- Since, the 'One' talked about is already born, and has parents. So it is the parent who will decide the chances of child's schizophrenia not the grandparents.
- Grandparents would have decided the parents's schizophrenia but it has happened now. Now, whatever be the case of parents at present, will decide the chances of child.
- Hence, We can't say based on grandparent's schizophrenia, child's schizophrenia can be decided.
(E) A person's risk of developing schizophrenia is at least partially determined by genetic factors.
- 'At least' and 'Partially' can be inferred by 12% and 45% given in the passage.