OTS times are:-
East or night time - 0100 to 0800 UTC at 30w
West or day time - 1130 to 1900 UTC at 30w
Flying an OTS route is optional and a flight not entirely following an OTS track would be called a random flight/route as are flights outside the time periods.
There is no such thing as 'random airspace'. Where did you get these questions? I thought they were corrected years ago.
Both flights are operating outside the standard OTS times and are random flights. Q1 = D, Q2 = C (as the better answers).