GMAT Sentence Correction (SC) | Re: Proponents of relaxations that Censorship Board allow

Proponents of relaxations that Censorship Board allow production houses to each year to provide them enough space to make creative piece of works consider them vital for the economic growth of the entertainment industry while critics denounce the relaxations as a leeway that increases the revenue of the production houses but damages the moral character of the children.

For start the main verb with Board that needs to come is allow hence C is out.

A)Proponents of relaxations that Censorship Board
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