Final answer:
The author supports the idea that adopting can help save a life by presenting evidence of how many dogs are euthanized each year, making the connection between adoption and reduced euthanasia rates. (option c)
Step-by-step explanation:
The idea that adopting can help save a life is supported in the text by providing evidence of how many dogs are euthanized each year. This establishes a direct connection between the act of adoption and the reduction of euthanasia rates in animal shelters, making option c the most probable answer:
c. by giving evidence of how many dogs are euthanized each year.
While the provided text excerpts do not directly mention euthanasia statistics, discussing the rigorous training of service dogs and regulations for traveling with service animals implies a value placed on dogs' lives and roles. The emphasis on training and regulation indirectly supports the idea that increasing adoption could lead to fewer animals in shelters potentially facing euthanasia if they are not adopted.
Hence, the answer is option c