Annual Movement of Dhangars:
The Dhangars are a nomadic pastoral community in India who traditionally engage in sheep and goat rearing. They have a seasonal migration pattern where they move with their livestock in search of grazing grounds.
True Statements regarding the annual movement of Dhangars:
- They stay in the Central Plateau during the monsoons: This statement is true. During the monsoon season, the Dhangars stay in the Central Plateau region. This region provides better grazing lands for their livestock during this time.
- After the monsoons are over they move towards the Konkan area: This statement is true. After the monsoon season ends, the Dhangars move towards the Konkan area. The Konkan region has favorable climate and abundant vegetation, making it suitable for their livestock.
- With the onset of monsoon, they leave the Konkan: This statement is true. With the onset of the monsoon season, the Dhangars leave the Konkan region. The heavy rainfall and waterlogged conditions during the monsoon make it unsuitable for the movement and grazing of their livestock.
Therefore, the correct answer is Option D: All of the above.

Dhangars are a pastoral community that is traditionally involved in sheep and goat rearing. They have a nomadic lifestyle and move with their herds in search of grazing lands and water sources. The annual movement of Dhangars is influenced by various factors such as the availability of grazing lands, climate, and the needs of their herds.

The given options state different aspects of the annual movement of Dhangars. Let's analyze each option to understand which one is true.

a) They stay in the Central Plateau during the monsoons:
During the monsoon season, the Central Plateau receives adequate rainfall, resulting in the growth of lush green grass. This makes it an ideal grazing area for the Dhangars' herds. Therefore, it is likely that Dhangars would stay in the Central Plateau during the monsoons to take advantage of the abundant grazing resources. This option seems plausible.

b) After the monsoons are over they move towards the Konkan area:
The Konkan region, located on the western coast of Maharashtra, receives heavy rainfall during the monsoon season. This leads to the growth of grass and availability of water sources, making it suitable for grazing. Since the monsoons provide favorable conditions in the Konkan area, it is logical for Dhangars to move towards this region after the monsoon season to allow their herds to graze and access water. This option seems plausible as well.

c) With the onset of monsoon, they leave the Konkan:
This option seems contradictory to option b. If the Konkan region provides favorable conditions for grazing during the monsoon season, it would be unlikely for the Dhangars to leave this area when the monsoons begin. Therefore, this option seems incorrect.

d) All the above:
Options a and b both seem plausible based on the characteristics of the Central Plateau and the Konkan region. Therefore, option d, which states that all the above options are true, is the correct answer.

In conclusion, the annual movement of Dhangars involves staying in the Central Plateau during the monsoons and moving towards the Konkan area after the monsoons are over.