Answer:
A. Quantitative
Explanation:
Quantitative data is measured in values and numbers. Qualitative data is measured in types and characteristics. Because Selena collects data in the numerical form, she used the quantitative approach.
An important role or responsibility that passed form one person to another
B I'm not sure look it up
Verna system divides the Indian Society into Brahman, Kshatriya, Vaishyas, and Shudras which was originated during Vedic System, however, the three societies Brahman Kshatriya and Vaishyas gain inheritance with other Indo-European Societies whereas Shudras was added by Brahmans from northern India and division of society according to Verna system was highly prevalent during colonialism which played key role in division of population