Organisation X is a health and wellness company. Organisation X want to make use of big data to improve certain areas in their organisation. They appoint researchers to help them analyse the raw big data sets they have collected. The researcher highlight issues linked to privacy, personal information, personal identifiers, financial records, and health records. The researchers also indicate that the data sets are messy and heterogeneous due to the use of different layers of data collected. Which of the following challenges for using big data can you identify from the scenario?

a$.$

Data representation and technology constraints

b$.$

Anonymisation and data representation

c$.$

Access to data and redundancy

d$.$

Anonymisation and technology constraints