4) Research has shown that exposure to secondhand smoke in public places can be harmful to people's health. yes no

## Step 1<br />The problem presents a statement about the potential health risks associated with exposure to secondhand smoke in public places. The task is to determine whether this statement is true or false.<br />## Step 2<br />The statement is based on scientific research and studies that have shown the harmful effects of secondhand smoke on human health. These studies have consistently shown that exposure to secondhand smoke can lead to a variety of health issues, including respiratory problems, heart disease, and even cancer.<br />## Step 3<br />Given the evidence from scientific research, the statement is true.