Final answer:
Marvin's displacement relative to his front door is 0 meters despite walking a total distance of 20 meters, as displacement is measured from start to end position, not the path taken. The correct answer is option: C. 0 meters
Step-by-step explanation:
Marvin's overall change in position relative to his front door is C. 0 meters. This is because displacement is the change in position of an object from its starting point to its ending point, not considering the path taken in between.
Marvin walked 10 meters from his front door to his mailbox and then walked the same distance back, ending up where he started.
Therefore, although he walked a total distance of 20 meters, his displacement, or change in position relative to his front door, is 0 meters.