Read the passage and choose the best answer

Antarctica is a snow-covered continent. The average temperature at the South Pole is -50°C. Few plants and animals can live on the land because it is too cold for them. There are a few scientists from different countries who live and work on special bases in Antarctica. On midsummer’s day (December 22nd) there is daylight for 24 hours and so during this period a few tourist ships and planes come to see this strange land. But in the winter there is no daylight for months. It must be a terrible place during the winter. The snow is always there - winter and summer - but in fact, little snow falls in the year (an average of 12-20 cm). People say that it can be a beautiful place. At first, it appears frightening but after a little time, some people fall in love with it.

What is the average temperature at the South Pole?