Respuesta :

I believe it is " Lacy attended girls' camp last summer."

hope this helps you! :-)
Your correct answer is:

C. girls

All the other choices are only used in sentences like:

That girl's long blonde hair is gorgeous!

The girls' cheer-leading jackets are all too big.

If you are a girl you will be playing on the pink team. 

Hope this helps! Would really appreciate brainliest answer thanks so much!