Pedigreed dogs, including those officially classified as working dogs, must conform to
standards set by organizations that issue pedigrees. Those standards generally specify the
physical appearance necessary for a dog to be recognized as belonging to a breed but
stipulate nothing about other genetic traits, such as those that enable breeds originally
developed as working dogs to perform the work for which they were developed. Since dog
breeders try to maintain only those traits specified by pedigree organizations, and traits that
breeders do not try to maintain risk being lost,
certain traits like herding ability risk being
lost among pedigreed dogs. Therefore, pedigree organizations should set standards
requiring working ability in pedigreed dogs classified as working dogs. The boldface portion
plays which one of the following roles in the argument?
A) It is a claim on which the argument depends but for which no support is given.
b) It is a subsidiary conclusion used in support of the main conclusion.
c) It acknowledges a possible objection to the proposal put forth in the argument.
d) It summarizes the position that the argument as a whole is directed toward discrediting.
e) It provides evidence necessary to support a claim stated earlier in the argument.
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