sat blue book grammar question?

Argentina2017
Mon, 06 Jul 2015 22:55:23 +0000

If you use before, the “idiom” is BEFORE BEING. That is:

Before being widely hunted for their ivory and blubber in the eighteenth century, walruses were plentiful in the waters of the northeaster United States.

Apart from that, choice B says “its”, but it should be their.