Yea it may or may not have been the pretest SIM, but I didn't leave it blank because I thought it was a pretest. It was the very last SIM and just didn't really have time to dive into it. Probably would have taken at least 10-15 minutes just to read the problem, review the tabs and documents, and to completely comprehend what it was asking for. I glanced over everything in the 5-10 minutes I had and thought I would at least be able to fill in a few of the cells, but in the end I didn't want to guess and end up losing points if I should have just left the cell blank.
The DRS, enhanced SIMs, and research question I felt okay with for the most part…but this last one was like WTF lol.
But I agree, give each one your full effort. You can allocate your time to SIMs you think you can get the most points on, but definitely not recommended to skip over one just because you assume it's a pretest.