Assertion (A): All viviparous animals show indirect development.
Reason (R): In all oviparous animals, development involves larval stage.

Options

A. Both A and R are true and R is the correct explanation for A.
B. Both A and R are true but R is not the correct explanation for A.
C. A is true and R is false.
D. A is false and R is true.

Explanation

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**: The assertion states that "All viviparous animals show indirect development." Viviparous animals are those that give birth to live young rather than laying eggs. Examples include humans, dogs, and most mammals.

2. **Evaluating the Assertion**: In reality, viviparous animals typically exhibit direct development. This means that the young are born in a form that is similar to the adult form, without going through a larval stage. Therefore, the assertion is incorrect.

3. **Understanding the Reason (R)**: The reason states that "In all oviparous animals, development involves a larval stage." Oviparous animals are those that lay eggs, and many of these animals (like frogs and insects) do indeed go through a larval stage during their development. However, not all oviparous animals have a larval stage; for example, birds and reptiles do not have a larval stage.

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