Refer to the figure below, and then answer the following question(s).

-The missing label indicated by a "4" in the figure should be:

Question

Refer to the figure below, and then answer the following question(s).
 
-The missing label indicated by a "4" in the figure should be:

Quizplus · Accepted Answer

The figure shows the timeline of human evolution with various species labeled. The missing label is located between "Australopithecus afarensis" and "Homo ergaster". Since the timeline progresses from older to newer, the missing label is likely a species that existed after Australopithecus afarensis but before Homo ergaster. The most plausible option is therefore "Australopithecus africanus", which lived from 3-2 million years ago and is thought to be a descendant of Australopithecus afarensis.

Refer to the Figure Below, and Then Answer the Following