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

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.