Final answer:
The statement that supports Harriet's belief in legalizing prostitution is 'It improves public health,' as it can lead to better health outcomes and safer conditions for sex workers.
Step-by-step explanation:
Harriet believes that legalizing prostitution is a good idea. The statement that supports her position is 'It improves public health' (C). Legalizing prostitution can lead to better health outcomes for sex workers and the general public. When prostitution is regulated, there can be regular health check-ups, use of protection, and other public health measures that reduce the spread of sexually transmitted infections (STIs). Additionally, legal frameworks can create safer working conditions and provide support systems for those in the industry. History shows that during periods where prostitution was either accepted or regulated, efforts were made to mitigate health risks, although the effectiveness and enforcement of such regulations varied. Legalization can also reduce the stigma associated with sex work, allowing workers to seek healthcare without fear of legal repercussions.