Which answer best describes the most widely held theory about how humans came to populate earth? a. they developed from different hominid species in different places over millions of years. b. they traveled by boat from africa to different continents. c. they migrated over land from africa over the last 80,000 years. d. they migrated from the americas to africa four million years ago.

C. They migrated over land from Africa over the last 80,000 years.

Explanation:

The most commonly accepted theory of how humans came to populate the world claims that humans originated in Africa from other, more primitive hominids. It was in Africa that modern humans began, and over thousands of years, they spread across the world. Different environments and needs led to the transformation of humans, which allowed them to develop different appearance and behaviour until there was an enormous variety among human populations of the Earth.

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you probably know the answer. stop asking stupid questions and making me waste my time. j.k. ; )   b.t.w. what are three ratios equivalent to 5 : 11? thx