Question

drag the missing word into place
the most famous in the world is probably the
serengeti in africa.
continent savanna drought

Explanation:

The Serengeti is a savanna (grassland ecosystem with scattered trees), so the missing word should be "savanna" to complete the sentence meaningfully. "Continent" doesn't fit as Serengeti is a region, not a continent, and "drought" is a weather event, not a land type.

Answer:

savanna