Forty Ate

We're talking about two most statements, and you can't take the contrapositive of a most statement. They should also be separated into two lines, like in the video, as this is not a conditional and shouldn't have a conjunction.

Large nursery ‑m→ commercial grower

Large nursery ‑m→ guaranteed disease free

I believe this is covered either in the lesson Most Statements are Not Reversible. Hope this helps!

Got this right under target time!! All the lawgic mapping practice really does pay off. Don't get discouraged if it doesn't come naturally to you, it didn't for me at first. Just keep practicing!