Who served as the president of the confederacy

Is when a person has given their consent based on understanding the actions and facts of a study?

An refers to a specific factor that has a range of possible values

Which of these would be describing a developed country? a) literacy rate of 84% b) life expectancy of 58 years c) post-secondary education rate of 10% d) infant mortality rate of 3 per 1,000 births