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 Sally is on vacation, then Tom is at work.
If Tom is at work, then the line at the post office is long.
Therefore, if Sally is on vacation, then the line at the post office is long.

Answer 1

The argument is based on syllogism, ie:
\[P \rightarrow Q\]
\[Q \rightarrow R\]
\[P \rightarrow R\]

Answer 2

so is this the answer to the question

Answer 3

Yes think of it like this