[Solved] which of the following step / assumption in regression modeling impacts the trade- off between under-fitting and over-fitting the most.

Q.	which of the following step / assumption in regression modeling impacts the trade- off between under-fitting and over-fitting the most.
A.	the polynomial degree
B.	whether we learn the weights by matrix inversion or gradient descent
C.	the use of a constant-term
Answer» A. the polynomial degree

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