Answer:
Among the options provided, the elements that are among the six most commonly found in the body are:
- Carbon
- Calcium
- Phosphorus
- Oxygen
- Hydrogen
So, the correct elements are carbon, calcium, phosphorus, oxygen, and hydrogen.
Step-by-step explanation:
1. **Carbon:** It is a fundamental building block of organic molecules, including carbohydrates, lipids, proteins, and nucleic acids, which are essential for life.
2. **Calcium:** Found in bones and teeth, calcium is crucial for their structure and strength. It also plays a role in various cellular processes and signaling.
3. **Phosphorus:** This element is a key component of DNA, RNA, ATP (adenosine triphosphate), and other molecules involved in energy transfer and storage.
4. **Oxygen:** Essential for cellular respiration, oxygen is involved in the process where cells generate energy (ATP) from nutrients.
5. **Hydrogen:** Present in water and many organic molecules, hydrogen is a fundamental component of biomolecules and plays a role in pH regulation.
These elements are vital for the structure, function, and energy processes within the human body, making them among the most commonly found elements in living organisms.