Go and buy the Rob Avery sample exams r.e. Aviation shop all the pilot stores sell them. They will cover every area for the exam if you can score a pass then go again. The exam before KDR had almost a 70% first time failure rate.
If wx below app minima alternate reqd in spite of alternate wx box if you continue on then common sense requires a backup escape route.
For the NVFR the question relates to a PVT/AWK so if it not CHTR you are not considering the NVFR 100Nm because it relates to CHTR only. Hence why it was not an answer as you are talking about AWK/PVT refer CAO 40.2.2 App I Section 5 1 hour night and 1 circuit.
Stay focused on the exam if you are scoring just below the 70% then there must be other areas you need to focus on as well. Its basically a flight rules exam with some met thrown in. Rob Averys exams will help as I have used them many a time when teaching this stuff.
Cheers