[Solved] ________is much more difficult because it's necessary to determine a supervised strategy to train a model for each feature and, finally, to predict their value

Q.	________is much more difficult because it's necessary to determine a supervised strategy to train a model for each feature and, finally, to predict their value
A.	Removing the whole line
B.	Creating sub-model to predict those features
C.	Using an automatic strategy to input them according to the other known values
D.	All above
Answer» B. Creating sub-model to predict those features

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