Final answer:
Use the information sign to determine the correct travel distance and direction, as it provides displacement vectors which are essential for accurate navigation.
Step-by-step explanation:
When you encounter a travel information sign, the correct action is to use the sign to determine travel distance and direction, as indicated in option B. These signs provide crucial information about the displacement vectors, which include both the distance and the direction to your destination. It is important to understand the concept of displacement in geographical context as it combines both scalar (distance) and vector (direction) quantities to precisely guide your travel.
For example, telling a friend about a fishing hole 6 km away is not enough; you need to specify that it is 6 km northeast. This ensures your friend understands the displacement from the point of origin. Similarly, when reading a map, not only should the scale for distance be noted, but also the direction indicated, usually with a north arrow or other navigational aids.