Q3 - In the past, combining children

[canylaw]

I was debating between c and e.
C is right because it will solve the problem of older kids not getting bored and younger kids getting attention.( or am I assuming too far,may be one of the issues if solved would be enough?)

Why E is wrong?
Because it says "reviving" or may be they were the few satified students of the class who got attendance/were not bored.Or may be did not know how to fix the problem.

Pls advice.

[maryadkins]

This is an "Explain the Result" question. We need to identify the apparent discrepancy first.

We're told that in the past, mixed age classrooms didn't work because older kids got bored and younger ones got confused. But today, they work because older children are stimulated and younger ones learn more efficiently. We're looking for an answer choice that could explain the change. (C) offers something that has changed between "the past" and now--group projects. It tells us these projects have had a positive effect on students of all ages. Bingo!

(A) doesn't give any reason why today the mixed classrooms would be better for either group. If anything, it seems larger classes might make things more difficult.
(B) is the opposite of what we are looking for.
(D) is like (A)--so what? And maybe this would actually exacerbate the problem.
(E) offers a reason why people may be reviving the mixed age classroom today--perhaps it's because they don't know that it didn't work. But it doesn't explain the success of the modern day mixed classroom.