[Solved] Researchers studying guppies in Trinidad found that guppies in streams with high predation reproduced earlier and more frequently.How would the scientists describe the selective force acting on the guppy population? A) density-dependent factors B) K-selection C) density-independent factors D) r-selection E) sexual selection World Wide Fund: An international non-governmental organization working on issues regarding the conservation, research, and restoration of the environment, commonly known by its initials WWF. Fear: An unpleasant emotion caused by the belief that someone or something is dangerous, likely to cause pain, or a threat. Reminder: A communication tool used to prompt or encourage an audience to remember and consider a product, service, event, or message. Sex Appeals: The use of sexually suggestive or erotic imagery in advertising to draw interest to a product or service, often provoking emotional responses from the audience.