Which of the following animals are oviparous in nature?
A. Frog
B. Ostrich
C. Butterfly
D. Cow
E. Reindeer
F. Tortoise

Options

A. D and E
B. A, B and F
C. A, B and E
D. A, B, C and F

Answer

To determine which of the following animals are oviparous, we need to understand the definition of oviparous. Oviparous animals are those that lay eggs, as opposed to viviparous animals, which give birth to live young.

Let's analyze each option:

1. **Frog (A)**: Frogs are known to lay eggs in water. Therefore, frogs are oviparous.

2. **Ostrich (B)**: Ostriches are birds that lay eggs. Hence, ostriches are also oviparous.

3. **Butterfly (C)**: Butterflies lay eggs as part of their life cycle. Therefore, butterflies are oviparous.

4. **Cow (D)**: Cows give birth to live young, which makes them viviparous, not oviparous.

5. **Reindeer (E)**: Reindeer also give birth to live young, classifying them as viviparous.

6. **Tortoise (F)**: Tortoises lay eggs on land. Thus, tortoises are oviparous.

Now, compiling the results, the oviparous animals from the options provided are:
- A. Frog
- B. Ostrich
- C. Butterfly
- F. Tortoise

**Final Answer**: The oviparous animals are A (Frog), B (Ostrich), C (Butterfly), and F (Tortoise).

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