Question

__________ is the biggest health concern in the united states (and other developed countries worldwide).
o obesity
o high blood pressure
o arteriosclerosis
o diabetes mellitus

Explanation:

Obesity has become a major public - health issue in the United States and other developed countries due to its high prevalence and associated health risks like heart diseases, diabetes etc. High blood pressure, arteriosclerosis, and diabetes mellitus can be related to obesity but obesity itself is a significant and growing concern.

Answer:

obesity