Suppose I tell you:

Many good puppies went to puppy school. 🐶 No good puppy bites people.

I ask:

Must it be true that “Not all puppies who went to puppy school bite people”?

YES!

Why?

We already know there are good puppies who went to puppy school.

And good puppies don't bite.

Therefore:

At least some puppy-school puppies don't bite.

I mapped it out exactly how he did but still picked the wrong answer lol

@ShawnSimmons What do you use the blind review for. To see the question again and break it down?