Final answer:
While the latest time Paul can start his chores cannot be determined due to missing information, an example calculation for Maria's errand time shows she will reach her friend's house at about 3:00 p.m. after leaving at 1:00 p.m.
Step-by-step explanation:
The question at hand requires an understanding of adding and subtracting measures of time. Assuming Paul knows the total time it takes to complete his chores, he simply needs to backtrack from the time his father is expected home, which is 6:30 p.m., to determine the latest time he can begin his tasks. Unfortunately, since the actual total time required for Paul's chores is not provided in the question, we cannot select a definitive option among A) 5:30 p.m., B) 4:30 p.m., C) 3:30 p.m., or D) 2:30 p.m. We can, however, solve the example problem provided related to Maria's errands.
Maria estimates her tasks will take 15 minutes at the post office, 1 hour and 25 minutes at the mall, and 20 minutes to drive to her friend's house. To find out when she would arrive at her friend's house, we add up the minutes: 1 hour and 25 minutes (85 minutes) + 20 minutes + 15 minutes = 85 + 35 = 120 minutes. Since 60 minutes are in an hour, this equates to 2 hours. Adding 2 hours to the 1:00 p.m. departure time, Maria should arrive at her friend's house at approximately 3:00 pm.