I think that this is the case because Germany is struggling with the legacy of the Second World War, when they caused a lot of suffering, lead to the death of many people and forced many to become refugees. By being more open to refugees I think Germany is trying to compensate for the wrongdoings from the past.
Answer: All statements are correct. Dreams reveal what is happenning in the unconscious psyche. Unconscious psyche is in movement all the time, i.e. it is changing all the time, it is dynamic. Dreams open the door to all this.
Explanation: dream is considered to be a "royal road" to unconscious (together with other phenomena like fantasies or physical symptoms).