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Humans have been damaging . . . . .

This topic has 1 member reply

Humans have been damaging . . . . .

Post Mon Sep 25, 2017 6:07 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Humans have been damaging the environment for centuries by overcutting trees and farming too intensively, and though some protective measures, like the establishment of national forests and wildlife sanctuaries, having been taken decades ago, great increases in population and in the intensity of industrialization are causing a worldwide ecological crisis.

    A. though some protective measures, like the establishment of national forests and wildlife sanctuaries, having been taken decades ago, great increases in population

    B. though some protective measures, such as the establishment of national forests and wildlife sanctuaries, were taken decades ago, great increases in population

    C. though some protective measures, such as establishing national forests and wildlife sanctuaries having been taken decades ago, great population increases

    D. with some protective measures, like establishing national forests and wildlife sanctuaries that were taken decades ago, great increases in population

    E. with some protective measures, such as the establishment of national forests and wildlife sanctuaries, having been taken decades ago, great population increases

    The OA is B.

    Where is the mistake in option D?

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    Post Sat Oct 14, 2017 6:59 am
    After several minutes reading this question, I couldn't determine why option C is wrong.
    Experts, can you give us some help?

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