Answer:
Stand up for them yourself.
Step-by-step explanation:
The golden rule states that you must treat others how you want to be treated so if you saw someone being bullied and not standing up for themselves then you would stand up for them because if you were in that position, you would want others to stand up for you. You would also stand up for them because everyone should try to be a good person and just sitting and watching someone being miserable is not being the best you!