Final answer:
The extinction of Gigantopithecus might have been influenced by climate change affecting their food sources, though it is likely that a combination of factors contributed to their demise, mirroring the complexity evident in woolly mammoth extinction studies.
Step-by-step explanation:
The question regarding Gigantopithecus extinction is somewhat analogous to the multiple hypotheses related to the extinction of woolly mammoths. Although the direct causes for Gigantopithecus extinction remain uncertain, it is plausible that climate change could have impacted their food sources, such as bamboo forests, and contributed to their extinction. However, the answer A could be an oversimplification as multiple factors, including habitat loss, climate change, and possibly even human intervention, might have played roles in the extinction of such prehistoric species. The various studies on woolly mammoths highlight the complexity of extinction events, where no single factor is wholly responsible.