GMAT Sentence Correction (SC) | At age four, Mozart's father began taking him on tours of

In many occasions "own" is redundant, but here it is not. The talents are his own, not his father's - to clarify this fact, "own" is required.

(Also note that the comma before "to" is not required - such a prepositional phrase at the beginning of a sentence requires a comma, but at
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