What should not be a concern regarding travel?

The correct answer is based on the understanding that while safety is an important consideration when traveling, it is a factor that should be prioritized and managed rather than a concern that should be disregarded. Safety involves planning routes, selecting trustworthy transportation, and being aware of one's surroundings, which are essential practices for ensuring a successful trip.

On the other hand, cost, time, and distance are practical logistics that often involve trade-offs and require careful planning. These variables directly impact the feasibility of travel plans and can significantly affect the overall experience. For instance, budgeting for travel costs, estimating the time needed for the journey, and considering the distance to the destination are all critical components of travel preparation. Understanding these factors is crucial for making informed decisions about travel routes and methods while ensuring that safety measures are effectively integrated.