Answer:
B, Kilograms.
Explanation:
We can compare this to another problem, to help you understand.
Chase is a puppy and doesn't weight a lot. Let's review the different metric units that we use for measuring weight. A milligram is for very tiny things such as a bean or a dust particle. A gram measures slightly heavier things like a paperclip or a pencil. A kilogram is used for things with definite weight, like a kitten or a dog.
The vet would have measured Chase in kilograms.
Hope this helped. :)
