### A good answer might be:

A conditional branch tests a condition then changes the PC if the condition is true (for example, the instruction `beq label`).

# Branch Equal to Zero

The extended assembler implements several conditional branch instructions beyond the basic ones. For example:

    beqz    rs,label          # branch to label if register rs == 0
                              # (pseudoinstruction)

The hardware does not have a machine instruction for this operation. It does, however, have a zero register and the `beq` instruction (branch equal).

### QUESTION 2:

Fill in the blanks so the branch is taken if $rs is zero.

    ______    rs,________,label          # branch to label if register rs == 0