What do old human brains and old beagle’s brains have in common?

Responses

Afewer neural tangles in the brains and the inability to learn new tricks
fewer neural tangles in the brains and the inability to learn new tricks
Bmore frequent senile plaques in the brains of those with learning and memory problems
more frequent senile plaques in the brains of those with learning and memory problems
Cgreater ability to make errors in small, everyday tasks like seeking a reward
greater ability to make errors in small, everyday tasks like seeking a reward
Drapid improvements in their ability to modify their behaviors

A - fewer neural tangles in the brains and the inability to learn new tricks