Answer:
The option that was used to revise this sentence is
A. moved parts of the sentence around.
Step-by-step explanation:
There are two clauses in the original sentence. The first clause is "She took her goggles and towel", the second one is "and is going swimming." In the revised sentence, all that was done was move the clauses so that the first became the second and vice-versa. In the original sentence, the author used the coordinate conjunction "and" to introduce the second clause. In the revised version, that conjunction was replaced by another coordinate conjunction, "so". Still, the meaning the sentence conveys is the same.