Final answer:
Histamine causes contraction of smooth muscle in both the bronchioles and intestines, contributing to airway constriction and movement of material through the digestive tract.
Step-by-step explanation:
Histamine produces contraction of the smooth muscle of the bronchioles and the intestine. When histamine binds to the H1 G-protein-linked receptor, it can contribute to airway constriction associated with allergic responses. This means that among the multiple-choice options provided, the answer is d. both a and b
Smooth muscle tissue, which is also found in the walls of blood vessels, contracts involuntarily and can also lead to constriction of these vessels. However, in the context of the question that specifically mentions contraction of smooth muscle due to histamine, the focus is on the contraction of smooth muscle in the intestine and bronchioles, which are key in allergic reactions such as an itchiness response or the tightening of airways respectively.