Which AES function provides confusion by replacing on byte of the State with another?

A.
AddRoundKey

B.
MixColumns

C.
ShiftRows

D.
SubBytes

Explanation:
Answer D is correct; SubBytes substitutes (replaces) on byte of the State with another.

Incorrect Answers and Explanations: A, B, and C: Answers A, B, and C are incorrect. AddRoundKey XORs the State with the key. MixColumns mixes the columns of the state via finite field mathematics. ShiftRows shifts the rows of the State.