Which of the following is not true with reference to annual movement of Dhangar? 

The question explores the migratory patterns of the Dhangar community and their seasonal movement between regions. Let’s analyze each statement:

1. They stay in the Central plateau during the monsoons: This is a true statement. During the rainy season, the Dhangars typically remain in the Central plateau, as it provides suitable grazing areas for their sheep and livestock.
2. After the monsoons are over they move towards Konkan: This is also correct. Once the monsoon season ends, the Dhangars migrate to the Konkan region where the grasslands are lush, and the conditions are favorable for their livestock.
3. With the onset of monsoon they leave the Konkan: This is accurate. As the monsoon season approaches, they vacate the Konkan region because the heavy rains make it unsuitable for grazing and habitation.
4. All are true: This statement is incorrect because none of the above statements is false. Therefore, the correct answer to the question, "which of the following is not true with reference to the annual movement of Dhangar," would be that all the statements provided are indeed true, making option "d" incorrect in this context.

Conclusion

The migratory habits of the Dhangar are a classic example of nomadic pastoralism, carefully adapted to seasonal changes and geographical conditions. When analyzing questions like "which of the following is not true," it’s crucial to break down each statement and compare it with historical and geographical evidence.

In this case, none of the options provided contradict known patterns of the Dhangar community, confirming that all statements are correct. Hence, the phrase "which of the following is not true" does not apply directly, as no incorrect statement is present.