According to the activation-synthesis hypothesis, the cortex of the brain combines random brain activity into stories and visual images that form your dreams

Answer the following statement(s) true (T) or false (F)

An ED50 value indicates the dose at which 50% of the drug’s effect was produced.

Focusing health promotions on at-risk people is beneficial because

A. it helps to gradually reduce their risk. B. it is easier to prevent health problems among those who are not at risk. C. it helps to identify other factors that may increase risk. D. it is obvious that people who are not at risk are more likely to stay healthy.