Answer:
All viruses are obligate parasites; that is, they lack metabolic machinery of their own to generate energy or to synthesize proteins, so they depend on host cells to carry out these vital functions.
The correct option is A.
Horse are herbivores, they eat plants. Large amount of the digestion and absorption of these plant materials occur in the cecum. Horses have enlarged cecum which helps in the digestion process of their food.
C is the answer.
Explanation: I had this in my test.
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