Savannas are
a. located only in africa
b. characterized by four distinct seasons
c. lacking diverse animal life
d. between tropical rainforests and deserts

The correct answer is - d. between tropical rainforests and deserts.

The savannas are located in between the rainforests and the deserts, thus they belong in the tropical region. They are dominated by grasslands, and have the occasional shrubs or trees. It is a semi-arid region, where most of the year is dry and hot, and there's seasonal rains that usually appear only in one short period of the the year. It is a place that is abundant of wildlife, and the biodiversity is on a pretty high level for a semi-arid region.