The subclavian artery that arises directly from the aorta supplies the . A) right upper extremity and neck B) left upper extremity and neck C) anterior trunk wall D) posterior trunk wall

B, left upper extremity and the neck.

Explanation: The left subclavian artery is the artery that arises directly from the aorta. Its branch arises from the arch of the aorta. This artery supplies blood to the left upper extremities (the arm and shoulder) and also the neck. The right subclavian artery along side the right commom carotid artery is a branch of the brachiocephalic artery which arises from the aorta..

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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