Step 1: Break the word into roots.
Anthropogenic splits into anthropo, meaning human, and genic, meaning caused or produced.
Step 2: Combine the meaning.
Put together, anthropogenic means caused or produced by humans.
Step 3: Test Natural.
Natural means arising on its own without human action, which is the opposite, so it is rejected.
Step 4: Test Super-induced and Synthetic.
Super-induced is not a standard synonym, and synthetic means artificially manufactured, which is not the same as caused by humans in general, so both are rejected.
Step 5: Test Human-induced.
Human-induced means brought about by human activity, which matches the root meaning exactly.
Step 6: Choose the synonym.
The best synonym of Anthropogenic is Human-induced.
\[ \boxed{\text{Human-induced}} \]