Whic sentence is correct?
a) It's the wonderfulest recipe.
b) It's the more better method.
c) He's the shortest of the twins.
d) Joe deals more honestly than his partner.

Question

anonymous · Answer

C) He's the shortest of the twins.....  I think that one's right.

anonymous · Answer

Actually, I disagree with MetalPen. It's d) Joe deals more honestly than his partner. 

This one you can solve through process of elimination. A) wonderfulest isn't a word. So that's obviously out. B) More better is not proper English, so that's also obviously out. C is tricky. Usually, shortest is correct, but in this case, he is one of two. The ending "e s t" is usually used with a group 3 or more. Therefore it should be "He's the shortER of the twins."  Thus, d is correct.

anonymous · Answer

I agree with lperkows, the correct answer is D. Shouldn't use the superlative (shortest) with just two (twins). That's really tricky and requires taking into account more than just the grammar!