Read the given passage and answer the questions.
“Jatra” is a musical folk theatre art form, popular in Bengali speaking areas of the Indian sub-continent including Bangladesh, West Bengal, Orissa, Assam and Bihar. The word “jatra” means journey. While the original themes of “jatra” were largely religious, by the end of the 19th century, it began to include moral and later, even secular themes. The survival of this folk art form has been credited to its adaptability to changing social contexts.
Which of the following is indicated in the given paragraph ?