Which of the following are narrow blood vessels that restrict blood flow and have thin walls that allow gas exchange?

c is the correct answer hope this !

the correct answer is anaphylaxis.

anaphylaxis is a condition caused by insect bites, foods, medications, manifested by tongue swelling, shortness of breath, vomiting, low blood pressure. it sometimes may occur without an obvious reason. it is treated with epinephrine injection.other tretments include antihistamines and steroids,

prejudice, stereotyping, and discrimination often go hand-in-hand, but it is also possible to have one without the others. when an ethnic group is stereotyped with a neutral or positive attribute such as "family-oriented," prejudice and discrimination may not be involved.

explanation:

while prejudice refers to biased thinking, discrimination consists of actions against a group of people. discrimination can be based on age, religion, health, and other indicators; race-based laws against discrimination strive to address this set of social problems.