求教OG13第124题的逻辑链

lefrancais

OG13第124题的逻辑链和类型搞不懂，请教各位高手！

女王的肥皂

咦，你用三段式做题呀。

我还有看到谁这么做呢？

DylanYue

1, government-funded schools are free of charge and therefore, are faced with a growing enrollment during a recession due to a drop of average incomes. (explicit)
2, government-funded schools are required to hire more teachers in accordance with the new law that sets an upper limit on the s-t ratio. (implicit)
3, conclusion: recessions do not make teaching jobs in government-funded schools harder to get (given that most employment opportunities contract.)

A: not significan, government-funded schools WILL always have an influx of new students as long as schools that are not free during recession exist.
B: correct since teaching jobs may be the center of fierce competition during recessions which directly contradicts the conclusion.
C: of no value, no matter what the present ratio is, the reasoning is not affected by the current ratio. if the ratio is far below the required limit, meaning that there are much more teachers than students, we can not predict whether a recession will bring in so many students that the ratio may exceed the limit, which stimulate schools to hire more teachers.
D: the proportion does not provide any information to determine whether getting teaching jobs will be harder in times of recessions.
E: like C, the past or current ratio does not affect the argument which focus on the future recession.