An embolus is dangerous because it can:

a. cause cancer
b. block a smaller blood vessel
c. cause excessive bleeding
d. cause anemia


b
Explanation:
a. cause cancer: an embolus does not cause cancer
b. block a smaller blood vessel: correct
c. cause excessive bleeding: an embolus does not cause excessive bleeding
d. cause anemia: an embolus does not cause anemia

Health & Biomechanics

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