On the weather map of the flight area, the isobars are close together. What does this mean?

Question

Question EASA Drone Quiz - Meteorology

QuizVDS · Accepted Answer

It is the relationship between the frequency and severity of a possible event

QuizVDS · Answer

There is no difference

QuizVDS · Answer

UAS

QuizVDS · Answer

Latency does not affect aircraft

Id 477 - EASA Drone Quiz – Drone Pilot Certification - On the weather map of the flight area, the isobars are close together. What does this mean?