False. The writer is to make their own conclusions. Hope this helps!
A. Smoothest is the answer because superlative means <span>of the highest quality or degree.</span>
The answer would be - slang words and phrases. American and British English often differ greatly in such words as: highway (AmE) = motorway (BrE), or cookie (AmE) = biscuit (BrE), or diaper (AmE) = nappy (BrE), etc.