Why is it difficult to derive collected data that benefits the user?

A. size of user data is very large and diverse
B. derivation techniques are not powerful enough
C. available user data is of poor quality
D. costs of derivation are too high

A. size of user data is very large and diverse

Collecting and deriving data that is meaningful and beneficial to the user can be difficult due to the sheer volume and diversity of data that is available. With so much data to sift through and analyze, it can be overwhelming to determine which information is relevant and useful to the user. Additionally, organizing and making sense of large and diverse datasets can be challenging and time-consuming.