Read the following passage and do the tasks below:
Vietnam is a multi-nationality country with 54 ethnic groups. The Viet (Kinh) people account for 87% of the country's population and mainly inhabit the Red River delta, the central coastal delta, the Mekong delta and major cities. The other 53 ethnic minority groups, totaling over 8 million people, are scattered over mountainous areas spreading from the North to the South. Among ethnic minorities, the largest ones are Tay, Thai, Muong, Hoa, Khmer, and Nung with a population of around 1 million each, while the smallest are Brau, Roman, Odu with several hundred people each.
A number of ethnic minorities have mastered some farming techniques. They grow rice plants in swamped paddy fields and carried out irrigation. Others go hunting, fishing, collecting and lived a semi-nomadic life. Each group has its own culture, diverse and special. Beliefs and religions of the Vietnamese ethnic minority groups are also disparate from each other.
A. Choose the best answer A, B, C or D to complete the sentences:
