The best awnser is D but A is also doable
Just try to answer some questions as well, then you can keep a nice balance.
ps. Only answer the questions you know.
Answer:
D) Unsupervised Data mining
Explanation:
Unsupervised data mining also refered to as undirected data mining reveals hidden patterns in unlabeled data. In this method, there are no output variables to predict. The aim of an unsupervised data mining technique is to uncover patterns in data based on the relationship between the data points and each other
