From the fact that people who studied music as children frequently are quite proficient at mathematics, it cannot be concluded that the skills required for mathematics are acquired by studying music: it is equally likely that proficiency in mathematics and studying music are both the result of growing up in a family that encourages its children to excel at all intellectual and artistic endeavors.
Your task
Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.
Common trap
Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.
Winning move
Predict what a right answer must do, then test each choice against the conclusion-evidence gap.