The task is to match the countries given in List I with their respective capitals listed in List II. We need to choose the correct combination from the options provided.

List I contains four countries: Bulgaria, Austria, Romania, and Czech Republic.

List II contains four capital cities: Prague, Bucharest, Vienna, and Sofia.

Now let`s analyze each option:

Option 1: I-A, II-B, III-C, IV-D

According to this option, Bulgaria is matched with Prague (correct), Austria with Bucharest (incorrect), Romania with Vienna (correct), and Czech Republic with Sofia (correct). This option is not correct because Austria is incorrectly matched with Bucharest.

Option 2: I-D, II-B, III-C, IV-A

According to this option, Bulgaria is matched with Sofia (incorrect), Austria with Bucharest (incorrect), Romania with Vienna (correct), and Czech Republic with Prague (correct). This option is not correct because Bulgaria and Austria are incorrectly matched with the wrong capitals.

Option 3: I-D, II-C, III-B, IV-A

According to this option, Bulgaria is matched with Sofia (correct), Austria with Vienna (correct), Romania with Bucharest (correct), and Czech Republic with Prague (correct). This option is