The answer is letter C. juncture... domicile
The word juncture means a certain point or moment in time, while domicile means a home.
It would be the same as saying, 'At this point in my life, I think it is time to go live in my own home where I can keep house for myself.'
Keep house is expression meaning the same as doing house chores, such as cooking, cleaning, doing the laundry etc.