One of the key challenges of the Baltic nations is . a. ethnic diversity b. gaining admission to the European Union c. adopting the Russian language d. economic development

A. Ethnic Diversity

Answersource rock;

This would be an open primary. a closed primary people can vote only prior to election day if the party if they are registered. independent voters can not participate. there is not a wide-open primary, but there is a semi-open primary.