To solve the question of identifying which shrubs are grown for their ornamental foliage, let's examine each option one by one:
- Codiaeum variegata: Commonly known as Croton, this shrub is widely recognized for its colorful and varied leaf patterns, making it a popular choice for ornamental foliage. The attractiveness comes from its multicolored, vibrant leaves.
- Murraya exotica: Also known as Orange Jasmine or Mock Orange, this shrub is primarily known for its fragrant flowers rather than foliage. Therefore, it is not primarily grown for its ornamental leaves.
- Acalypha hispida: Known as the Chenille plant, this shrub is mainly cultivated for its showy, red, catkin-like flowers. While it is not specifically grown for its foliage, the leaves can also be quite decorative.
- Cassia laevigata: Known for its attractive yellow flowers, this plant is usually not grown for its foliage, but rather for its vibrant floral display.
Based on the explanations above:
- (A) Codiaeum variegata is grown for its ornamental foliage.
- (C) Acalypha hispida has decorative foliage in addition to its flowers.
- (B) and (D) are primarily known for their flowers, not foliage.
Thus, the correct answer is (A) and (C) only.