PT 15 S2 Q14

Pedigreed dogs, including those officially classified as working dogs, ... ...

The phrase "certain traits like herding ability risk being lost among pedigreed dogs" serves which one of the following functions in the argument?
(A) It is a claim on which the argument depends but for which no support is given.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Practice Set: "Method/Function" Questions, Set 2 - Func