The correct answer is: a) Tea plantations.
Movements focused on workers’ rights in Arunachal Pradesh have primarily addressed issues faced by laborers in tea plantations. Tea plantations are a major source of employment in Arunachal Pradesh, and workers in these plantations often face poor working conditions and low wages. There have been a number of protests and strikes by tea plantation workers in recent years, calling for better working conditions and higher wages.
The other options are incorrect because they do not represent the primary focus of workers’ rights movements in Arunachal Pradesh. The construction sector is a growing industry in Arunachal Pradesh, but there have not been as many protests or strikes by construction workers as there have been by tea plantation workers. Government services are also a major source of employment in Arunachal Pradesh, but government employees are generally better paid and have better working conditions than tea plantation workers. Traditional crafts industries are also important in Arunachal Pradesh, but workers in these industries do not face the same level of exploitation as tea plantation workers.
In conclusion, the correct answer is: a) Tea plantations.