GMAT Reading Comprehension (RC) | Re: Over the last 150 years, large stretches of salmon habitat

normally, there are 3 wrong answer which are clear because all of long phrase is incorrect

when there are 2 choices left, the wrong choice has only ONE WORD WRONG.

choice B and C are close. choice b has ONE WORD WRONG which is "one stream".

so B is wrong

when facing two closes answers, find out ONE WORD WRONG.

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