The ratio of dicorces to marriages has increased since 1940. Therefore, there must be a greater proportion of children living with only natural parent than there was in 1940. Which of the following, if ture, most strongly weakens the inference drawn above? A The number of marriages entered into by women twenty-five to thirty-five years old has decreased since 1940. B When there is a divorce , children are often given the option of deciding which parent they want to live with. C Since 1940 the average number of children in a family has remained approximately steady and has not been subject to wide fluctuations. D Before 1940 relatively few children whose parents both died were adopted into single-parent families. E The proportion of children who must be raised by one parent because the other has died has decreased since 1940 as a result of medical advances.
I do not know the Chinese definition of all kinds of logical fallacy. E basically provides one scenariao in which the conclusion "there must be a greater proportion of children living with only natural parent than there was in 1940" could be wrong.
-- by 会员 sdcar2010 (2011/2/13 21:52:19)
Do you regard one scenaro indicate the trend of one kind of component out of children raised by natural parents is contradicted to the trend the conclusion mentioned as a weakness?
and do you can indicate what kind of logic fallacy the argument belong to?
I do not know the Chinese definition of all kinds of logical fallacy. E basically provides one scenariao in which the conclusion "there must be a greater proportion of children living with only natural parent than there was in 1940" could be wrong.
-- by 会员 sdcar2010 (2011/2/13 21:52:19)
why A is not answer,I think the decrease in the number of marrage entered into by women 25-30 also can explain the reason why rate of divorces to marrages has increased.
I do not know the Chinese definition of all kinds of logical fallacy. E basically provides one scenariao in which the conclusion "there must be a greater proportion of children living with only natural parent than there was in 1940" could be wrong.