Which small mustelid, measuring barely 20 centimetres, is the world's smallest carnivore and hunts voles and mice in grassland?

• A Stoat
• B Polecat
• C Pine marten
• D Least weasel ✓

The least weasel (Mustela nivalis) is native to much of Eurasia and is distinguished from the stoat by its smaller size and lack of a black tail-tip.