[Solved] is the most drastic one and should be considered only when the dataset is quite large, the number of missing features is high, and any prediction could be risky.

Q.	is the most drastic one and should be considered only when the dataset is quite large, the number of missing features is high, and any prediction could be risky.
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» A. removing the whole line

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