An instruction format has the following structure: Instruction Number: Opcode…

Answer: The statement "There is a RAW dependency on R3 between I1 and I2" is correct. The other provided statements are incorrect.

Key definitions:

• Read-after-write (RAW): an earlier instruction writes a register and a later instruction reads that register.

• Write-after-read (WAR): an earlier instruction reads a register and a later instruction writes the same register (anti-dependency).

• Write-after-write (WAW): two instructions both write the same register; the ordering of writes matters.

Dependencies in the given sequence:

• Between I1 (DIV R3, R1, R2) and I2 (SUB R5, R3, R4): RAW on R3, because I1 writes R3 and I2 reads that value.

• Between I1 (DIV R3, R1, R2) and I3 (ADD R3, R5, R6): WAW on R3, because both instructions write R3.

• Between I2 (SUB R5, R3, R4) and I3 (ADD R3, R5, R6): WAR on R3, because I2 reads R3 before I3 writes a new value.

• Between I3 (ADD R3, R5, R6) and I4 (MUL R7, R3, R8): RAW on R3, because I3 writes R3 and I4 reads that value.

Conclusion: Only the statement that there is a RAW dependency on R3 between I1 and I2 is true; the other statements misidentify the dependency types.