Child trafficking is most similar to
a. slavery
b. war games
c. international travel
d. child protection

a. slavery

Explanation:

Child trafficking is a form of human trafficking. This occurs when children are taken or bought from their home or their families and exploited. This can include forced labour, sex or other forms of exploitation. This makes child trafficking very similar to slavery. Although child trafficking is illegal all over the world, it is very common in many regions.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

answer; i believe the answer is (b) fascism;