Material that is common knowledge select one:

a. must be credited to avoid plagiarism.
b. should only be paraphrased to be ethical.
c. is unlikely to be known by many people.
d. does not require a citation.

d. does not require a citation.

Explanation:

if you know it and you put it in your words and didn't quote or paraphrase from a source, you don't need to cite. if you used the information from a source. always cite.

the correct answer is "hematoma formation, with ligaments that are stretched, partially, of fully torn" ankle sprain are produced by an injury to the tough bands of tissue (ligaments) that surround and connect the bones of the leg to the foot. this causes several damage to the ankle including hematoma formation and ligament injury .