The correct option is D All of the above
The flora of the Apennines is Mediterranean in type and varies with both latitude and altitude. In the north, woodlands with oak, beech, chestnut, and pine predominate. To the south, ilexes, bays, lentisks, myrtles, and oleander (a flowery evergreen herb) abound. Prevailing crops are represented by the olive trees, growing to a height of about 1,300 feet above sea level; citrus fruits, which are well developed in Calabria and Sicily; and grapes, which are found in abundance in Tuscany, Lazio, and Puglia. Other products of the range include sugar beets (in the plain of Emilia), potatoes, vegetables, and fruit. The importance of corn (maize) diminished with the depopulation of hill farms. In the highland areas, pasturing remains the main form of land utilization.