The correct option is C Ipomoea batatas
Tuberous roots are found in Ipomoea batatas. A tuberous root or storage root is a modified lateral root which is enlarged to function as a storage organ. The enlarged area of the storage root can be produced at the end or middle of a root or involve the entire root. It is thus different in origin but similar in function and appearance to a stem tuber. Examples of plants with notable tuberous roots include the sweet potato, Cassava, and Dahlia. The sweet potato (Ipomoea batatas) is a dicotyledonous plant that belongs to the family Convolvulaceae. Its large, starchy, sweet-tasting, tuberous roots are a root vegetable. The young leaves and shoots are sometimes eaten as greens.
Thus, the correct answer is option C.