Mustard oil or Colza is got from
Brassica rapa
The mustard oil is made up of mustard seeds. This oil has a distinctive, pungent taste, characteristic of all plants in the mustard family. Brassica rapa, commonly known as turnip rape, field mustard belonging to family Brassicaceae. It is widely cultivated species including turnip, napa cabbage. The oil made from the seed is also called Canola or colza. So, the correct answer is 'Brassica rapa'.