Step 1: Identify Regions and Capitals.
Spain's regions and their capitals are as follows:
- La Rioja → Logroño
- Asturias → Oviedo
- Aragón → Zaragoza
- Extremadura → Mérida
Step 2: Perform Matching.
Match the following: A-IV, B-I, C-II, D-III
Step 3: Confirm Accuracy.
The cities accurately correspond to their respective autonomous communities.
Step 4: Final Answer.
The correct option is (4) A-IV, B-I, C-II, D-III.