This question tests 2 concepts: Idiom, and Meaning. Idiomatically, when we make a comparison with “as” we need to use a “double as,” or “as…as.” Only (A), (B), and (C) contain the correct idiom. Now we must carefully examine the Meaning.
Here we are comparing the “positive effect” in various “countries.” Since “China,” “the Netherlands,” and “Hungary” are all countries, the comparison is clear in (A).
Why can’t it be (B) or (C)?
The word “are” in (B) is
...
Here we are comparing the “positive effect” in various “countries.” Since “China,” “the Netherlands,” and “Hungary” are all countries, the comparison is clear in (A).
Why can’t it be (B) or (C)?
The word “are” in (B) is
...








