The Key to This Question:This is a classic
"term substitution" assumption question. The parent uses two
different terms as if they mean the
same thing:
•
"Not certified" (the fact)
•
"Unqualified" (the conclusion)
The Parent's Logic:25% of teachers are uncertified →
25% chance daughter gets an
unqualified teacher
But wait! Being "uncertified" and being "unqualified" are NOT automatically the same thing!
A teacher could be uncertified but still perfectly qualified:
- Experienced teachers who haven't gone through formal certification
- Teachers certified in other states
- Industry professionals with expertise
The Hidden Assumption:For the parent's conclusion to work, they
must assume that
every uncertified teacher is unqualified.
Answer: (A) - Any teacher not certified by the department of education is unqualified.
The Negation Test:Negate (A): "Some uncertified teachers ARE actually qualified."
If this is true, the parent's
25% risk calculation
falls apart - proving (A) is a necessary assumption.
Why the other choices fail:(B) - Uses "
best" - a
superlative trap. The argument doesn't need DOE to be the BEST certifier.
(C) - Talks about "effectiveness." The argument is about qualified vs. unqualified - not about how effective each type is.
(D) - Introduces comparison to other schools. The argument is only about THIS school.
(E) - Whether teachers are "in the process" of certification is irrelevant - they're still currently uncertified.
Takeaway: When you see an argument that jumps from one term to another, the assumption is almost always that those two terms are equivalent. Spot the term shift!