Final answer:
The role of providing medical advice is not typically considered a role of grandparents discussed in the lecture, while emotional support, financial support, and childcare were identified as key roles.
Step-by-step explanation:
The possible roles of grandparents discussed in the lecture include providing emotional support, financial support, and childcare. However, providing medical advice was not mentioned as one of their roles. The lecture emphasized that grandparents can have a critical impact as primary caregivers in scenarios where parents are unable to fulfill their responsibilities due to various reasons such as drug abuse, incarceration, or abandonment. Grandparents also play a vital role in transmitting cultural values and acting as educational allies, particularly for young girls who can benefit from increased self-confidence and guidance from their elders.