Final answer:
The evidence from multiple sites suggests that large brains were not necessary for Homo to migrate out of Africa. Examples include Homo naledi, Homo habilis, and Homo rudolfensis.
Step-by-step explanation:
The evidence from multiple sites suggests that large brains were not necessary for Homo to migrate out of Africa. For example, the species Homo naledi had a brain size no larger than an average orange, but they were able to squeeze into caves and deliberately deposit their dead, which indicates intentional behavior. Similarly, the species Homo habilis and Homo rudolfensis had brains larger than a chimpanzee but were only 90-120 centimeters tall, showing that physical size did not require large brains for migration.