One of the human health effects of sulfur dioxide is:
a. carboxyhemoglobin formation
b. bronchoconstriction
c. lung cancer
d. brain/cns damage

Bronchoconstriction

Explanation:

Bronchoconstriction may be defined as the medical condition in which the airways of the lungs get constricted because of hardening of smooth muscle. The symptoms included are wheezing, coughing and breath shortness.

The main cause of bronchoconstriction is the effect of inhalation of sulfur dioxide in the lungs. The sulfur dioxide causes the hardening of smooth muscle of the lungs and may also effect the eyes.

Thus, the correct answer is option (b).

links? do you have a link? i don't see anything?

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.