Explanation

The question asks which is different from the others. Lebba refers to the lips. The other terms refer to parts inside the mouth used for speech.

Ganda is the gum ridge. Handa is the tongue. Hanka is the palate. These are all inside the mouth. But Lebba (lips) are outside parts you can see.

Speech organs work together to make sounds. Some are inside the mouth, some are outside. Each has its own role.