Concept:Savanna is Africa's most extensive vegetation belt because it spans the vast tropical region between the rainforest and desert zones.
Explanation:Africa's largest vegetation zone is the tropical savanna, which is characterised by open grasslands with scattered trees.
This belt stretches across a huge portion of the continent, covering roughly half of Africa's total land area.
It lies mainly between the equatorial rainforests of Central Africa and the Sahara and Kalahari deserts.
Therefore, the savanna occupies more land than any other vegetation belt in Africa.
The Mediterranean forest is restricted to the extreme north-west and south-west coastal fringes of the continent.
Temperate grassland occurs only in limited patches, such as parts of the South African highveld.
Temperate forest is also confined to very small areas with suitable rainfall and cooler climates.
Because these vegetation belts cover smaller, more localised regions, they cannot match the savanna in total area.
Answer:C. Savanna