A. Farmers
most of her painting were flowers but she painted a picture of an adobe named "Ghost Ranch"
Answer:
The easiest thing to do in you situation would be to use references from other drawings or real pictures, and make sure you use a consistent light source. Sorry if this doesn't answer you question but these are some tips.
D. All of the above.
A, B, and C would all be useful in finding your personal learning style. Therefore, the answer is D.