What type of mixture are separated by centrifugation? 

In order to answer the question, we must first explain the fundamental definition of centrifugation as well as some relevant data. the procedure that uses a centrifuge to apply centrifugal force to separate heterogeneous materials by sedimentation.

As a method of sedimenting heterogeneous mixtures using a device called a centrifuge, centrifugation may be thought of as the application of centrifugal force. It is frequently utilised in both industrial settings and scientific settings. This is the method used to separate two liquids that cannot mix.
When it comes to the uses, we can't state some of them are:

-The separation of the water and the chalk powder.
-Skim milk is made by removing the fat from milk.
-Water separation from fabrics
-Using cyclonic separation to separate the particles from an airflow.
-Diversification of the blood and urine components in forensic and research labs.
-Draining the lettuce of water after a salad spinner wash.
-The wine stabilisation and clarifying procedure.
-Separation of water stains from clothing during washing machine spin drying.
Therefore, based on the provided information, we conclude that all of the solutions are the best ones.

So the correct option would be option (D), all of these.