A claim is ... the closing point of any argument. the starting point for any argument. the supporting details in an argument. the citations available for an argument.



Answer :

It's first you claim, then you come with details. So, it's the starting point for any argument.
A claim is "The starting point for any argument."

"The closing point of any "argument" is the Conclusion. 

"
The supporting details in an argument" is the Main idea.

"
The Citations available for an argument" is the Evidence.