Oral means "spoken instead of written,by word of mouth." So the most likely answer is C. it's recited from memory. Examples of that would be Greek mythology,folklore,or legends. For the hundreds of years those were mainly passed down by word of mouth, from memory.
The day of the funeral arrived and there I was standing before the grave stone. It read ‘MARY ROBERT WILSON’. There were lots of people here and I felt uncomfortable. I was only five years old when she died. Back then, nothing made sense. All I remembered was people dressed in black with their heads down and no sound apart from the rushing wind. The woman, Mary, was my mother. It was so long ago, and I was so young that I didn’t know how to react. I just stood there holding on to my fathers hand smiling not knowing that I would never see my mum again. Not knowing that my life was about to change and there was nothing I could about. 10 years later I recall the moment of her death, of her grave and only now... I realised it was too late to cry.
The main idea is more specific than a theme . The theme could be food and the main idea might be that people need to be more careful about what they eat .
Hope that helped
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