9. Hurricanes form over: A. Cold, polar land. B. Warm, tropical land. C. Cold, polar oceans. D. Warm tropical oceans.

## Step 1<br />Hurricanes, also known as tropical cyclones, are a type of storm that forms over warm, tropical oceans. This is because the warm ocean water provides the necessary heat and moisture to fuel the storm.<br /><br />## Step 2<br />The warm ocean water heats the air above it, causing the air to rise and create a low-pressure area. This low-pressure area is what draws in the surrounding air, creating the storm.<br /><br />## Step 3<br />The other options, such as cold, polar land or cold, polar oceans, are not conducive to the formation of hurricanes. This is because the cold temperatures do not provide the necessary heat and moisture to fuel the storm.