A、Red. B、Orange. C、Green. D、Brown. C由女士所说的“Red for high levels of sugar，salt or fat，orange for medium，and green for low”可知，绿色表示低

M: I’ m always seeing in the news these days that we’ re eating too much sugar. And one important factor is that sugars are sometimes hidden in processed foods.
W: Do you check the information on the back of food packets, Rob?
M: Yes, I do. But it can be very confusing. There’ s so much information.
W: Some food products have colour coding on the packaging to help you understand the information. Red for high levels of sugar, salt or fat, orange for medium, and green for low.
M: That sounds helpful.
W: But one problem we see in nutrition is sort of this focusing on any individual foods. Sugar is demonised. People link it to drugs. And I think this is the wrong way forward.
Q7: What is mainly discussed in the conversation?
Q8: Which colour is mentioned to represent low levels of sugar?
Q9: According to the woman, what is the problem with people’ s attitude towards sugar?