"Make up your damn mind, then. It's either one or the other. Consider the alternative and be glad you're not trapped in that Time Lock. It can't be that bad. Do what you always do. Tell them what they want to hear and be done with it. I thought they would take that tracker off you if you proved you were rehabilitated, or something like that?" The Doctor was straightforward, because he knew the Master could take it.
There was a pause, then, "She. What's she like. Your next regeneration, you're a woman."