An example of slavery, according to anti-slavery international, is: factories employing adults at a salary level. factories using child labor. children attending school. children playing with friends.

B) factories using child labor

Explanation:

Children working in dangerous or unhealthy places are always considered slave labor. According to Anti-Slavery International, slavery today is not based on the owners of other people as in the past, but being exploited and completely controlled by someone else, without being able to leave. So, the better option to fit this statement is B.