Which person is not an American citizen?

A. Elisabetta, who married an American and now votes in American elections

B. Helga, whose American parents were in Germany when she was born

C. Mick, who was born in the United States to American parents

D. Travis who has applied for Naturalization but has not yet been approved

D. Travis who has applied for Naturalization but has not yet been approved

Explanation:

the outcome of 1970 oil crisis in united states was that, they began to search ways on how to reduce oil.

in 1970 was a period when there were energy and oil crisis. those who were major centers for industrialization were forced to keep way from supplying of petroleum.

some of the result of this crisis was economic growth became stagnant because prices of oil surged.

due to the increased prices some countries like mexico and norway benefited.