Which of the following purposes would most likely categorize topics such as "What are the effects of drug laws?" and "What impact does exercise have on life expectancy?"

The purpose behind choosing topics like "What are the effects of drug laws?" and "What impact does exercise have on life expectancy?" aligns closely with an informative speech. Informative speeches aim to educate the audience about a specific topic or issue, providing them with facts, data, and insights that enhance their understanding of the subject matter.

In this case, both topics seek to explain and elaborate on significant societal issues—drug laws and their implications, as well as the beneficial effects of exercise on health and longevity. An informative speech is structured to present information clearly and effectively, often incorporating research findings or statistics to support the claims presented. This clarity helps the audience learn and gain knowledge rather than persuading them to adopt a specific viewpoint, making the informative format ideal for these topics.