In which example is the horizontal effect of rights most clearly visible?

Correct answer: A private owner takes begar from a labourer

The correct answer is B. A horizontal effect means that a constitutional protection can matter in a relationship between private persons, not only between an individual and the government. Begar is forced labour without proper freedom of choice or payment, and the constitutional prohibition against exploitation is relevant even when the exploiter is a private owner. A concerns government administration but does not itself show a rights violation. C is a routine judicial act, and D is a routine educational activity; neither describes private exploitation. The key steps are: identify the protected right, identify the actor, and ask whether the right reaches this private relationship. Memory cue: horizontal means person-to-person, while vertical usually refers to person against the state.