the use of "synchronize"

[sarahfzq]

Ron, can you help on the below CR? thx

Because of a similarity to dance, synchronized swimming"”exhibition swimming in which the movements of one or more swimmers synchronize to a musical accompaniment"”is sometimes called water ballet, especially in theatrical situations.
A.of one or more swimmers synchronize to
B.of one swimmer or more is synchronized with
C.of one or more swimmers are synchronized with
D.by one swimmer or more is synchronized to
E.by one or more swimmers synchronize to

Struggling between A and C

[RonPurewal]

Is this an MGMAT question? I don't see it in our database.

If it's an MGMAT question, please cite where you saw it.

If it's not, please re-post in the general verbal folder, with a citation of the original source. Thanks.