Self-study
"Good hunter" and "bad hunter" are standard terms in the study of cats. ████ ███████ ███ ████ ████ ████ █████ ██ ██ ████ █████ ████ ███████ ███ ████ ███████ ████ █ ████ █████████████ ██████ ████ ████ ████ ███ ████ ████████ ███ ████ ████████ ████ ███ ████ ███████ ██ █████
Summary
The stimulus can be diagrammed as follows: 
Notable Valid Inferences
Most wildcats have a high muscle-to-fat ratio.
Most wildcats can kill prey that weigh up to half of their body weight.
Some cats that can kill prey that weigh up to half of their body weight have a high muscle-to-fat ratio.
Some domestic cats can kill prey that weigh up to half of their body weight.
Some domestic cats have a high muscle-to-fat ratio.
16.
If the statements above are █████ █████ ███ ██ ███ █████████ ████ ████ ██ █████
a
Some cats that ████ █ ████ █████████████ █████ ███ ███ ████ ████████
This could be false. We know that all good hunters have a high muscle-to-fat ratio. It could be the case that some of the cats with a high muscle-to-fat ratio are not good hunters.
b
A smaller number ██ ████████ ████ ████ ████ ████ ████ █ ████ █████████████ ██████
This could be false. We don’t have any information about the numbers of domestic cats or wild cats.
c
All cats that ███ ███ ███████ ████ █ ███ █████████████ ██████
This could be false. We don’t know enough about cats that are bad hunters.
d
Some cats that ████ █ ████ █████████████ █████ ███ █████████
Must be true. Some domestic cats are good hunters, which means they have a high muscle-to-fat ratio.
e
All cats that ████ █ ████ █████████████ █████ ███ ████ ████ ████ █████ ██ ██ ████ █████ ████ ███████
This could be false. We know that some cats with a high muscle-to-fat ratio can kill prey that weigh up to half their body weight, but we don’t know if this is true for all of these cats.