Aperson's ability to suppress one language while using their other language is known as the

Bilingual advantage

Explanation: Being bilingual means an individual can speak and understand two languages fluently and regularly. The individual's ability to suppress one and use the other language is an advantage which affects the cognitive ability of the individual such as mental flexibility, problem solving and enhanced relationship between peers who understand either of the two or both languages.

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.  

b because thats the naswer i got