Which statements about observational studies and experiments are true? Experiments are the best study to use to establish causality.
Experiments are always quicker to run than observational studies.
Observational studies tend to have fewer ethical considerations than experiments.
Observational studies have controlled environments.
Observational studies are more scientific than experiments.
Experiments can use a process called blinding to minimize bias in results.

cherokee and arikara

it would be a. that is the only one i could think of

nationalization is the set of dispositions and operations by means of which the state assumes, in varied form, the administration of private companies, of groups of companies or of the totality of certain economic sectors previously managed by individuals, such as the land portions. nationalization is the opposite of privatization. it is also called nationalization of the means of production, although a nationalized company can be previously both national and foreign ownership. nationalization or nationalization is a very characteristic action of ideologies such as socialism and nationalism.