Correct Option (D)
All four statements are factually correct.
1. Some species of turtle are herbivores: For instance, the green sea turtle (Chelonia mydas) is primarily herbivorous in its adult stage, consuming seagrass and algae.
2. Some species of fish are herbivores: Numerous fish species, such as parrotfish and surgeonfish, feed on plant matter like algae, classifying them as herbivores.
3. Some species of marine mammals are herbivores: Dugongs and manatees (sea cows) are well-known examples of herbivorous marine mammals, grazing on aquatic vegetation like seagrasses.
4. Some species of snakes are viviparous: While most snakes are oviparous (egg-laying), several species, including certain vipers and sea snakes, exhibit viviparity, giving birth to live young.
Incorrect Options
Options A, B, and C are incorrect because they exclude one or more statements that are factually accurate.
- Option A is incorrect as it excludes statement 2 (herbivorous fish) and statement 4 (viviparous snakes).
- Option B is incorrect as it excludes statement 1 (herbivorous turtles).
- Option C is incorrect as it excludes statement 1 (herbivorous turtles) and statement 3 (herbivorous marine mammals).