Question: Determine whether this argument is valid or not. If it's not, which row ( s ) in the final column contain a false? Review arguments

Determine whether this argument is valid or not. If it's not, which row(s) in the final column contain a false?
Review arguments in this video.
\table[[t,d,r,p??(qp)??(qr)=>r
Determine whether this argument is valid or not. If it's not,

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