Pick the odd one out from the following.
Nutrition. Plaving Respiration. Excretion

Explanation

To solve the question of picking the odd one out from the given options: Nutrition, Playing, Respiration, and Excretion, we can follow these steps:

**Step 1: Understand the terms.**
- **Nutrition**: This is a life process that involves taking in food and nutrients necessary for growth and energy.
- **Playing**: This refers to engaging in recreational activities, which is not essential for survival.
- **Respiration**: This is a vital life process that involves the exchange of gases, necessary for energy production in the body.
- **Excretion**: This is the process of removing waste products from the body, which is crucial for maintaining health.

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