Refer to figure. 
Firstly, find the exact position of the two aerodromes, using the coordinates given and examine each statement carefully.

• The aircraft follows a Westerly magnetic track from Schärding Süben (LOLS) to Pfarrkirchen (EDNP) aerodromes. According to the ICAO VFR semi-circular rule, for a westerly magnetic track, Even FLs/Altitudes + 500 ft should be flown (2500 ft, 4500 ft, 6500 ft, etc.). So, a cruise altitude of 6500 ft can be followed, which apart from being according to the ICAO rule, it provides obstacle clearance too. It is a bit higher than you might usually use for this route, but it is perfectly acceptable nonetheless.
• Line features (rivers, motorways, railways, etc.) are highly recommended for navigation in VFR flights. The Rott river, as a line feature, is very helpful, because it is aligned with the Westerly flight direction and runs very close to the route. The A3 motorway does not follow the route.
• The aircraft during its descent towards Pfarrkirchen (EDNP) destination aerodrome, will be within a Class F airspace with vertical limits from 1500 ft AGL - 2500 ft AGL, initially, and as approaching to the destination aerodrome will remain within a Class F airspace with vertical limits from GND - 2500 ft AGL.