Because of a similiarity to dance, synchronised

Question

Because of a similiarity to dance, synchronised swimming-exhibition swimming in which the movements  of one or more swimmers synchronise to  a musical accompaniment- is sometimes called water ballet, especially in theaterical situations.

A of one or more swimmers synchronise to 

b of one swimmer or more is synchronised with

c of one or more swimmers are synchronised with

d by one swimmer or more is synchronised to

e by one or more swimmers synchronise to

pb_india · Answer

"A" is clear and concise.
Uses synchronized to - idiomatic.

Antmavel · Answer

This one sounds strange to me...if I need to choose I would go for C

shalinikhatri · Answer

Because of a similiarity to dance, synchronised swimming-exhibition swimming in which the movements of one or more swimmers synchronise to a musical accompaniment- is sometimes called water ballet, especially in theaterical situations. 

A of one or more swimmers synchronise to 
movements don't synchronise themselves , so it should be a passive voice so rejected

b of one swimmer or more is synchronised with 
"movements" needs plural very not "is"

c of one or more swimmers are synchronised with 

d by one swimmer or more is synchronised to 
"movements" needs plural very not "is"

e by one or more swimmers synchronise to

I think synchronise is better with "with" not sure though ..
 but my answer is 'C'

sonaketu · Answer

I am sure, synchronise with is the right idiom. 
Also since movements is plural, we should use "are"
Thus I'll pick C.

Because of a similiarity to dance, synchronised

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