I think it would be “who weren’t able to go on the field trip”
Several ways you can determine the validity is
1.) The author and his credentials.
2.) Sources that back up the article/publication.
3.) Whether the article features bias or none, when appropriate.
Answer:
Yes! It is still active. The Atlantic Ocean is the second-largest of the world's oceans, with an area of about 106,460,000 km (41,100,000 sq mi). It covers approximately 20 percent of Earth's surface and about 29 percent of its water surface area. It separates the "Old World" from the "New World".
The Answer Would Be The Third One C They Would Want To Inform The Reader Like Let Him/Her Know
~Hope This Helps :)
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