Step 1: Understand the concept:
This question tests the order of hominid fossils in human evolution. We must place four forms from oldest to youngest.
Step 2: Recall the time line:
Australopithecus lived first, from about 4 million to 2 million years ago. Homo habilis came next, about 2.4 to 1.4 million years ago. Homo erectus followed, about 1.9 million to 100 thousand years ago. Homo sapiens is the most recent, appearing about 300 thousand years ago.
Step 3: Write the order:
The correct order is Australopithecus, Homo habilis, Homo erectus, Homo sapiens.
Step 4: Check option 1:
This option puts Homo erectus before Homo habilis. Habilis is older than erectus, so option 1 is wrong.
Step 5: Check option 2:
This option starts with Homo habilis and puts Australopithecus after Homo sapiens. Australopithecus is the oldest, so option 2 is wrong.
Step 6: Check option 3:
This option places Australopithecus after Homo habilis and puts Homo sapiens before Homo erectus. Both are wrong, so option 3 is wrong.
Step 7: Check option 4:
This option gives Australopithecus, Homo habilis, Homo erectus and Homo sapiens (the paper prints a small typo, 'erects'). The order matches the time line, so option 4 is right.
Final Answer:
Option 4 shows the right sequence from earliest to most recent.
\[ \boxed{\text{Option 4}} \]