Consider how you might be able to domesticate a dandelion. Think about the different traits of the common dandelion and what part of the plant is edible and what parts of this particular plant have been used as food (dandelion greens and dandelion wine made from the flowers are examples; are there others?). How would you select for more useful traits? What other common plants are not currently domesticated but which might be?
Write 3-4 sentences about how you would domesticate the dandelion, or if you are unfamiliar with that plant, choose another commonly found wild plant and discuss how/why you would choose to cultivate it.