If the argument below is valid, name which of the four valid forms of argument is represented. If it is not valid, name the fallacy that is represented.

If I catch the bus on time, then I am not late to work.
I caught the bus on time.
Therefore, I was not late to work.

Question

If the argument below is valid, name which of the four valid forms of argument is represented. If it is not valid, name the fallacy that is represented.
 
If I catch the bus on time, then I am not late to work.
I caught the bus on time.
Therefore, I was not late to work.

anonymous · Answer

If you caught the bus on time and therefore was not late to work, there is a cause and effect. But, the flip side of the argument is not true. Just because you catch bus on time does not mean you will always be not late to work.