Analyze the following sentence and tell me if it's passive or active.
The room was decorated by her.
The sentence "The room was decorated by her" is in the passive voice.
Complete the following task based on the instruction and optional input provided.### Instruction:
Analyze the following sentence and tell me if it's passive or active.

### Input:
The room was decorated by her.

### Output:
The sentence "The room was decorated by her" is in the passive voice.