Concept:Ornamental plants are grown mainly for their visual appeal, not for practical farm uses.
Explanation:Ornamental plants are cultivated to add beauty and improve the appearance of gardens, parks, roadsides, and indoor spaces.
Their primary purpose is aesthetic value through flowers, leaves, shapes, and colours.
They are not used as fodder, mulch, or raw materials in mainstream agriculture.
Thus, among the given options, beautifying the environment is the correct reason for growing them.
Answer:B. beautify the environment