Chiming

However, the usefulness of mother tongues should not be dismissed prematurely, as each mother tongue has its advantages. Which word is the closest in meaning to the word "prematurely" in the above sentence? 1)initially 2) childishly 3) impulsively 4) earl...

It means early. But looking at the context of the sentence, "impulsively" seems to fit the sentence better than "early". The answer given in the answer key is option 3. I chose option 4 originally. Can someone explain? I'm confused.

I got this question from an assessment book. Is the answer key wrong? Typo error?

Below is the entire passage. The word "prematurely" is from the third paragraph. Some of us are brought up in an English speaking environment, while others are brought up in Mandarin speaking families. This heavily shapes the language that we are most pro...