You have to measure something before it can be improved -you've just taken a huge first step! I would recommend ripping the band aid off and taking a full timed PT to remove any ambiguity around where you stand since you can't really improve if you have no baseline.

I was super dejected after taking my diagnostic since I (and I think a lot of people taking this test) thought I was going to magically just be a natural at it. Getting over those expectations and adopting a growth mindset have been super helpful for me (not to say that I don't still feel that way sometimes).

The test stamina can only come with practice and I'm still struggling with this - you're definitely not alone here.

Step away for a day or two from studying and recharge, then take the full PT - I think think that's a good, actionable first step. Then let the analytics guide you.

I understand why D is the correct answer, but I still feel like B is plausible:

Most students want someone with experience, lets say this is 60% of those surveyed. Couldn't it be possible for those 60% of people who felt this way to split their votes among leading candidates with experience being a university president so that none of those candidates would be the favorite? So despite the fact that more people voted for experienced candidates, they did not agree on which experienced candidate was best and left the door open for an in-experienced candidate to take the majority of responses. I feel like that's totally plausible and reasonable, but what am I not getting here?