**Explanation:**

Einstein left the Munich school for good because he disliked the regimentation of that school. This answer is supported by historical records and Einstein's own writings.

**1. Disliking the Regimentation:**

Einstein was known for his independent and unconventional thinking, and he did not thrive in a rigid and structured environment. The Munich school had a strict and regimented educational system that emphasized rote memorization and discipline. This approach did not align with Einstein's learning style and his preference for exploring ideas freely and critically thinking.

**2. Einstein's Discontent:**

Einstein himself expressed his discontent with the Munich school in his autobiography. He described the educational environment as "sterile," and mentioned his dissatisfaction with the teaching methods and lack of intellectual stimulation. He found the rigid curriculum and emphasis on conformity to be stifling and unappealing.

**3. Seeking a Different Educational Approach:**

Einstein's departure from the Munich school marked a turning point in his education. After leaving, he sought out alternative educational opportunities that would better suit his intellectual needs and allow him to pursue his own interests. He eventually enrolled in the Swiss Federal Polytechnic in Zurich, where he found a more flexible and stimulating learning environment.

**4. Einstein's Success Beyond Munich School:**

Einstein's departure from the Munich school did not hinder his academic success or intellectual development. In fact, it allowed him to flourish and excel in a more suitable educational setting. Einstein went on to make groundbreaking contributions to physics and became one of the most renowned scientists in history. His unconventional thinking and ability to challenge established theories were pivotal in his revolutionary discoveries.

In conclusion, Einstein left the Munich school for good because he disliked the regimentation of that school. The strict and structured environment did not align with his independent thinking and preference for intellectual freedom. His departure ultimately led him to find a more suitable educational setting where he could thrive and make significant contributions to science.

B) He disliked the regimantation of that school