Define the bolded word: the detective novel was hard to follow because of the complexities in the plot. the way in which pieces are put together or arranged parts of something that are hard to understand hurt someone you care about by breaking the person's trust an event causing great sadness or suffering; a work of literature with a sad ending

With the bolded word being complexities, the definition is...  

parts of something that are hard to understand  

Explanation:

In order to define the bolded word in this context we need to understand that “the detective novel was hard to follow because of the complexities in the plot.” therefore the right answer should be...  

"parts of something that are hard to understand"  rather than “the way in which pieces are put together or arranged.”

the answer is c: at the city park,it has two basketball courts, a playground, and a walking path.

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