Given this text: "The trail begins in a montane forest of aspen and white birch, climbs through a subalpine forest of Engelmann spruce and alpine fir, then emerges onto the open, treeless tundra, which is inhabited by pikas, hoary marmots, and a few hardy plants.". Which cefr level fits best: A1, A2, B1, B2 or C1?
a2