What is a form of modern-day slavery that involves holding individuals in compelled service for commercial sex trade?

The correct answer identifies human trafficking as a form of modern-day slavery that encompasses holding individuals in forced service primarily for the purpose of commercial sex trade. Human trafficking is a broad term that includes various forms of exploitation, one of which is sexual exploitation, where people are manipulated or coerced into engaging in sexual acts against their will.

Human trafficking can affect individuals of any age or background, but it often has a significant impact on vulnerable populations, making them targets for traffickers who seek to exploit their circumstances. This form of exploitation involves not only the violation of the victim's freedom but also serious moral and legal violations that warrant international attention and intervention.

The other options, while related to exploitation and violation of rights, do not specifically encapsulate the broad, organized nature of forced participation in the commercial sex trade. Child exploitation and sexual exploitation are subsets of human trafficking, focusing on particular dimensions of the issue, while labor trafficking relates to forced labor in industries rather than the sex trade. Thus, human trafficking encompasses all of these concerns under one unifying term, highlighting not only the severity of the issue but also the complexity of its manifestations.