The Biba model addresses:

A.
Unauthorized modification of data.

B.
Transformation procedures.

C.
Constrained data items.

D.
Data disclosure.

Explanation:
The correct answer is “Unauthorized modification of data”. The Biba model is an integrity model.
Answer “Data disclosure” is associated with confidentiality.
Answers “Transformation procedures” and “Constrained data items” are specific to the ClarkWilson model.