correct the text by inserting one comma. (note: in this skill, serial commas are not optional.) the ss…

correct the text by inserting one comma. (note: in this skill, serial commas are not optional.) the ss central america sank in 1857 but nearly one thousand ounces of gold were recovered from the ship in may 2014.
Answer
Brief Explanations:
The two clauses "The SS Central America sank in 1857" and "nearly one thousand ounces of gold were recovered from the ship in May 2014" are joined by the coordinating - conjunction "but". A comma is needed before the coordinating conjunction in a compound sentence.
Answer:
The SS Central America sank in 1857, but nearly one thousand ounces of gold were recovered from the ship in May 2014.