MIPS Assembly Language Instruction: Target Register

What instruction will use $rt (target register), instead of $rd (destination register), to receive the result of an instruction?

a) lw ($rt), offset($rs)
b) sw ($rt), offset($rs)
c) add $rd, $rs, $rt
d) sub $rd, $rs, $rt

Final answer:

The MIPS instruction that uses $rt as the target register is 'lw ($rt), offset($rs)'

Explanation:

The student is asking about specific instructions in the MIPS assembly language, which is used in computer architecture and engineering courses. The instruction that uses $rt as the target register to receive the result is the lw (load word) instruction. The format for this instruction is lw ($rt), offset($rs), where $rs is the base register and the offset is added to the address contained in $rs to form the memory address from which the word is loaded into $rt, the target register.

Here, option (a) lw ($rt), offset($rs) is the correct answer because it is the instruction that will use $rt as the target register to hold the data fetched from memory. On the other hand, the sw (store word) instruction uses $rt as the source register to store data into memory, and the add and sub instructions use $rd as the destination register for the result of the arithmetic operations.