The correct option is C The child was terrified to see the horrible huge black buffalo.
In order to find out the right sentence, let's understand what the order of adjectives is. If we have multiple adjectives in a sentence, the order of adjectives should be this - 1. Quantity, 2. Quality, 3. Size, 4. Age, 5. Shape, 6. Colour, 7. Proper adjective and 8. Purpose/Qualifier. We see that this sentence has three adjectives - horrible - quality, huge - size and, black - colour. Hence, we can say that Option C - 'The child was terrified to see the horrible huge black buffalo' is the correct answer. Options A, B, and D are incorrect as they do not follow the correct order of adjectives.