#feedback it would be great to get some "test like" examples incorporated to each lesson to better understand the importance of certain concepts.

For Q1: Would it also be accurate to negate the statement by saying "Some non-water breathing mammals have limbs"? Would that logically be the same as "Some non-water breathing mammals don't have limbs"? Do you have to negate the necessary condition?

I was thinking the same thing when doing these problems-- what's the point of this? But, I quickly realized that the thought process of "negating" statements will likely come into play in later logical reasoning question types. It will likely help to narrow down answer choices. However, (#feedback) I think it would be helpful when doing these lessons to know WHY what were learning is important and how we may use it down the line.

I am having the same issue. I paid for the $69/month subscription. Is there another subscription that I need to purchase through LSAC?

You're definitely not alone. I struggled a lot before getting to where I am now and I'm sure I have many more bumps ahead. Don't feel defeated-- tons of practice will get you where you want to be! You've got it!