What body of water is the shipping point of origin for a large portion of the global oil supply

The correct answer is The Arabian Sea and The Strait of Hormuz which lies  between the Persian Gulf and the Gulf of Oman. It provides the sea passage from the Persian Gulf to the open ocean and is one of the world's most strategically important points. On the north lies Iran, and on the south is the United Arab Emirates and Musandam, an exclave of Oman. About 20% of the world's petroleum passes exactly through the strait, making it a highly important strategic location for international oil trade.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

it should be d or b but i'm sure it's d