Misread the conclusion... Missed the word "not"

I am still confused as to why D could not be the answer? In my head D and E are relatively the same. Someone help!!

Is it necessary to do the conjunction step? Or can we just put it into lawgic and move on.

I always get 5/5 on these and the real LSAT questions I don't..

Now I'm lost.

5/5 finally!

Can someone explain the blind review? Mine says too much time spent, doesn't show any additional information or tips. Do I just hit next and move on?

The Disney argument is the strongest because they provided support that makes the conclusion true.

The tiger argument is strong but can also be challenged, need to have more supporting pieces to become a stronger argument.

The trash bin argument is considered weak because there are a lot of possibilities and if I was a lawyer I would be able to poke holes in his story.

Please correct me if I'm wrong.

This is a phenomenon-hypothesis:

The door was unlocked when Susie went to get in her car this morning. She told her son Micheal to go grab her purse from her car last night. My hypothesis is that Micheal did not lock the car back after he grabbed her purse.