Answer
d. bradykinin
Work Step by Step
Bradykinin are not produced by phagocytes, and they are peptides which cause blood vessels to dilate. Thus, the correct answer is option d.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.