Hey there mate!
Gregor wanted to send her to conservatory for music. This is what Gregor want to do for Grete before his transformation. He knew that if he were to do this, she would most likely take music as more as a strong thing in a career and not just view it as nothing special but view it as a great gift and actually something that would be more apart of her life, and this is why he did this.
Your correct answer to this question would be the following . . . .
[tex]\boxed{ for \ Grete \ before \ his \ transformation}[/tex]
I hope this helps you mate! :)
