The largest freshwater lake in Russia is called Lake __ Volga Caspian Mediterranean Baikal

## Step 1<br />The question is asking for the name of the largest freshwater lake in Russia. The options provided are Volga, Caspian, Mediterranean, and Baikal.<br />## Step 2<br />The Volga is not a lake, but a river, so it can be eliminated.<br />## Step 3<br />The Caspian is a saltwater lake, not a freshwater lake, so it can also be eliminated.<br />## Step 4<br />The Mediterranean is a sea, not a lake, so it can be eliminated as well.<br />## Step 5<br />The only option left is Baikal, which is indeed the largest freshwater lake in Russia.