At age four, Mozart's father began taking him on tours of the capitals of Europe, in order to demonstrate his musical talents.
C) Mozart began accompanying his father on tours of the capitals of Europe, to demonstrate his own musical talents
D) Mozart began accompanying his father on tours of Europe's capitals, to demonstrate his musical talents
I narrowed it down to C and D.
In D, does not 'his' correctly refer to Mozart, the clear subject of the sentence? I'm having a hard time determining when some pronouns are not ambiguous due to 'structure of the sentece' vs. true amguity. Here it seems clear that Mozart is the subject.