Step 1: Alternate route:
List the raw material of each: iron ore → iron and steel; limestone/gypsum → cement; petrochemicals/minerals → chemical industry; cotton (a crop) → cotton textile.
Step 2: Only one has an agricultural raw material:
Only cotton is a farm-grown crop, so only the Cotton Textile Industry is agro-based.
Step 3: Final Answer:
\[ \boxed{\text{Cotton Textile Industry}} \]