Final answer:
Without specific DPS guidelines, the most standard response for a student not finishing an exam in time would likely be a chance to retake it, but the actual policy may vary; predictions for a final exam score based on previous performance would need to consider various factors, including exam weightings and difficulty.
Step-by-step explanation:
If a student does not finish their DPS written exam in 1 hour, the options provided are specific scenarios that could occur depending on the policies of the Department of Public Safety (DPS) or the specific institution administering the exam. Without specific guidelines from the DPS, we cannot definitively say which of the options would occur. However, based on general testing practices, Option (B) - They will be given a zero for the exam - is unlikely, as most educational environments provide a chance to retake or account for unfinished exams. It is also uncommon to be given extra time unless prearranged accommodations are in place, making Option (A) less likely without those conditions. Therefore, Option (C) - They will be allowed to take the exam again on a different day - seems to be the most standard response among educational institutions when a student is unable to complete an exam in the given time. Nevertheless, it is important to check with the DPS or the educational institution's examination policy for a precise answer as it could also be Option (D) - None of the above.
As for predicting the final exam score based on a 90 on the third exam, a lot would depend on the scoring system of the DPS written exams and the weighting of the third exam relative to others. If all exams are weighted equally, and a student consistently scores around 90, one might predict a similar score for the final exam. However, performances can vary with each exam depending on difficulty and the student's preparedness and understanding of the exam content.