Which of the following statements about Oxygen is correct?

Which of the following statements about Oxygen is correct?

• A. It is a colored and odorous gas
• B. It is an essential nutrient
• C. It is a natural colorless and odorless gas
• D. It is primarily produced by animal respiration

Answer: (C)

Oxygen is correctly described as a natural colorless and odorless gas. In its gaseous state at room temperature and under standard atmospheric pressure, oxygen does not possess any color or smell, making it undetectable to the human senses in its pure form. This characteristic is important because it aligns with its behavior in biological and environmental contexts, where it plays a critical role in respiration and combustion processes. The other options contain inaccuracies that do not align with the properties and roles of oxygen. For instance, oxygen being described as a colored and odorous gas misrepresents its physical properties. Additionally, while oxygen is essential for various biological processes, it is not classified as a nutrient like carbohydrates, proteins, or fats. Lastly, the statement regarding oxygen being primarily produced by animal respiration is misleading, as oxygen is mainly produced through photosynthesis by plants, algae, and certain bacteria, while animals utilize oxygen during respiration.

Oxygen is correctly described as a natural colorless and odorless gas. In its gaseous state at room temperature and under standard atmospheric pressure, oxygen does not possess any color or smell, making it undetectable to the human senses in its pure form. This characteristic is important because it aligns with its behavior in biological and environmental contexts, where it plays a critical role in respiration and combustion processes.

The other options contain inaccuracies that do not align with the properties and roles of oxygen. For instance, oxygen being described as a colored and odorous gas misrepresents its physical properties. Additionally, while oxygen is essential for various biological processes, it is not classified as a nutrient like carbohydrates, proteins, or fats. Lastly, the statement regarding oxygen being primarily produced by animal respiration is misleading, as oxygen is mainly produced through photosynthesis by plants, algae, and certain bacteria, while animals utilize oxygen during respiration.