honestly, if you can, get accommodations for more time. since i have adhd i find that its something i need and i find myself needing the extra time for all the questions. if not, i think right now if ur just starting to study then its fine to take your time but try to also just skip questions and come back to save time as well.

"Before phosphorus levels doubled in the ocean region, most fish were able to survive in that region." this answer would be wrong since there are so many other factors that could contribute to the fish not surviving, it is simple to broad of a claim and not backed up enough by the passage. and the passage also never talked about fish survival/population before the phosphorus so it would be too wide of an implication to pick this. i hope that makes sense