Which is not a sound argument?

Sabrina wanted to be a better figure skater, so she took extra lessons and practiced every day. Her skating improved so much that she entered a competition.

Yesterday, a black cat ran in front of me, and letter I lost my wallet. If I don't see that black cat today, I would not have any bad luck.

We had a storm last night with hurricane-strength winds, and many trees were downed. There was a citywide power outage.

On a clear day, I can see he top of tomorrow, I will be able to see the monument.