Final answer:
Oral literature in the precolonial Philippines predominantly featured epic tales, mythical creatures, and tribal histories that served to pass down cultural knowledge and values. A is the correct answer.
Step-by-step explanation:
The usual subjects of oral literature in the Philippines during the precolonial period included a wide range of topics. Primarily, these consisted of epic tales that recounted the adventures and exploits of heroes, explained tribal histories, and featured mythical creatures and deities. These epics served as a means to transmit cultural knowledge, values, and historical memory through generations. Love stories, while also a part of oral literature, were among but were not the predominant focus. Instead, oral literature was steeped in the richer context of a community's shared narratives, often featuring battles, moral lessons, and the passing of cultural identity.
Looking into other cultures such as the ancient Greeks or the Germanic tribes, we can see parallels in the importance of oral literature in preserving history, cultural identity, and moral values.
In both cases, these narratives served as vehicles not only for entertainment but also for instruction, embodying a culture's ideals and virtues. For instance, epic poems like Homer's 'The Iliad' and 'The Odyssey' were integral to imparting Greek values of arête (virtue or excellence) and understanding their history and place in the world.