Gregor's secret plan had been to :
C. send his sister to a music conservatory
Because unlike him, his sister loves music and can play Violin really well
hope this helps
A: Hoeksttra, Ruthann and others. "The Nursing Profession." Little Brown, 2012. Entry B: Hoeksttra, Ruthann, et. Al. The Nursing Profession, Little Brown, 2012.
I did this on apex few years back, if i remember correctly the answer was B.