Question

Which argument is valid?

Answer 1

A.
If an animal can swim, then it has fins.
If an animal is a fish, then it has fins.
If an animal can swim, then it is a fish.



B.
If a polygon is a square, it has four right angles.
If a polygon is a rectangle, then it has four right angles.
If a polygon is a rectangle, then it is a square.



C.
If it is a dog, then it barks.
If it has a tail, then it is an animal.
If it is a dog, then it barks and has a tail.



D.
If a number is divisible by 12, then it is divisible by 6.
If a number is divisible by 6, then it is divisible by 2.
If a number is divisible by 12, then it is divisible by 2

Answer 2

I would say D. because all of them are true in that one :D

Answer 3

thank you! :)

Answer 4

you're welcome :D