Question

Determine if the argument is valid or invalid. Give a reason to justify answer.

If the bell rings, then we answer the door.
The bell rings.
We answer the door.
(Points : 2)
Valid by the law of detachment
Valid by the law of contraposition
Invalid by fallacy of the converse
Invalid by fallacy of the inverse
Valid by the law of syllogism
Valid by disjunctive syllogism

Answer 1

Valid.

Answer 2

which statement?

Answer 3

The entire thing, it's only one proposition.

Answer 4

I need to choose from these statements Valid by the law of detachment
Valid by the law of contraposition
Invalid by fallacy of the converse
Invalid by fallacy of the inverse
Valid by the law of syllogism
Valid by disjunctive syllogism

Answer 5

I think it's the first, but I'm not sure.