nly one of the following lines is correct WRAMP assembly syntax. Which one is it?a. j $rab. jr $rac. jal $rad. jalr readswitches

To determine which line of WRAMP assembly syntax is correct, we need to assess the syntax of each option.

1. Examine Each Option:

   • a. j $ra: This option looks like a jump instruction but is missing the label or destination.
   • b. jr $ra: This option indicates a "jump register" instruction that typically uses a register as the destination. This seems appropriate.
   • **c. jal $ra**: This option indicates a "jump and link" instruction, which is typically valid if `$ra` is a register. However, it does not seem like a correct destination format.
   • d. jalr readswitches: This option looks like it’s trying to perform a "jump and link register" operation with a function name, which is usually expected in assembly syntax.

2. Identify Correct Syntax: The jump register (jr) instruction is a commonly accepted form in assembly language syntax as it specifies to jump to the address contained in a specified register.

Conclusion

Considering the explanations, the correct line of WRAMP assembly syntax among the options provided is: b. jr $ra