Final answer:
The action that matches the series of energy conversions from Mechanical Energy to Chemical Energy to Thermal Energy and back to Mechanical Energy is 'Chewing and digesting food', which is option B.
Step-by-step explanation:
The student is asking which action matches the series of energy conversions from Mechanical Energy to Chemical Energy to Thermal Eneragy and back to Mechanical Energy. Correctly identifying this series involves understanding that energy transformations occur in many everyday activities.
When we chew and digest food, we use mechanical energy (for chewing), which starts the conversion to chemical energy in the digestive process. Our bodies then metabolize this chemical energy, converting it to thermal energy, which helps maintain body temperature and supports metabolic processes. Finally, that thermal energy can be used in muscle contractions, returning to mechanical energy as we move, exercise, or perform other activities. Therefore, the answer to the student's question is B. Chewing and digesting food.