Correct Answer:
Option B - At 1,830m altitude, Lake Tana is situated on the basaltic plateau of the north-western highlands of Ethiopia covering an area of 3,050km². It is poor in nutrients and the source of the Blue Nile river (great abbay), with a catchment area of 16,500km².
B. At 1,830m altitude, Lake Tana is situated on the basaltic plateau of the north-western highlands of Ethiopia covering an area of 3,050km². It is poor in nutrients and the source of the Blue Nile river (great abbay), with a catchment area of 16,500km².