In the United States, __ is the biggest health problem of 5 points the 21st Century Obesity Physical inactivity Diabeles Stroke

## Step 1<br />The question is asking for the biggest health problem in the United States in the 21st Century. The options provided are obesity, physical inactivity, diabetes, and stroke.<br />## Step 2<br />According to the Centers for Disease Control and Prevention (CDC), obesity is the most common health issue in the United States. This is due to the fact that obesity is a condition that can lead to a variety of other health issues, including diabetes, stroke, and physical inactivity.<br />## Step 3<br />Therefore, the correct answer is "Obesity".