Answer:
The potential problem associated with travel to another planet is:
the extended time for humans to be in space.
Explanation:
Currently, there are no significant technical barriers to sending humans to Mars, but the biggest challenge would be the long duration of the trip which can take several months or even years depending on the alignment between our planets. This could expose astronauts to significant physical and psychological risks, including radiation exposure, bone density loss, muscle atrophy and other health issues. The experience of living in small spacecraft or habitats in harsh conditions with limited resources and potential communication delays would also require significant resilience, teamwork and adaptability skills from crew members.