The correct answer is: a) Delhi, Maharashtra, Punjab.
Bihar is a state in eastern India. It is the third most populous state in India, with a population of over 100 million people. The state has a high rate of out-migration, with over 10 million people living outside of the state. The major destinations for out-migrants from Bihar are Delhi, Maharashtra, and Punjab. These states offer better job opportunities and higher wages than Bihar.
Delhi is the capital of India and is a major center for business and commerce. It is also a major tourist destination. Maharashtra is the second most populous state in India and is home to the city of Mumbai, which is the financial capital of India. Punjab is a state in northern India that is known for its agriculture and its production of wheat and rice.
The other options are incorrect because they are not major destinations for out-migrants from Bihar. Uttar Pradesh, Jharkhand, and West Bengal are all states in eastern India that have high rates of out-migration, but they are not as popular destinations for out-migrants from Bihar as Delhi, Maharashtra, and Punjab. Nepal and Bangladesh are neighboring countries of India, but they are not major destinations for out-migrants from Bihar.