To answer this question, we need to understand the concept of sea depth.
Option A) Caspian Sea - This option is incorrect because the Caspian Sea is actually the largest enclosed body of water on Earth. It is classified as a lake rather than a sea. The Caspian Sea has an average depth of about 211 meters.
Option B) Baltic Sea - This option is correct. The Baltic Sea is the shallowest sea in the world. It is located in Northern Europe and has an average depth of about 52 meters. Due to its relatively shallow depth, the Baltic Sea is prone to freezing during winter.
Option C) Superior Lake - This option is incorrect because Lake Superior is not a sea but a freshwater lake located in North America. It is the largest of the Great Lakes and has a maximum depth of about 406 meters.
Option D) Arabian Sea - This option is incorrect because the Arabian Sea is an extension of the Indian Ocean and is known for its deep waters. It has an average depth of about 2,850 meters.
The correct answer is B) Baltic Sea. It is the shallowest sea in the world with an average depth of about 52 meters.