The word 'perpetrate' means to-

The correct answer is commit a crime or wrongdoing.

Here's a breakdown of the other options:

* Protest against injustice: This means to stand up against unfairness or wrongdoing.

* Protect from cruelty: This means to shield someone from harm or suffering.

* Perform humanitarian service: This means to help people who are in need.

Therefore, the word "perpetrate" means to do something bad or harmful, like committing a crime.