During the process of photosynthesis, plants convert carbon dioxide and water into glucose. Covalent bonds hold the glucose molecules together. The breaking of the covalent bonds during digestion releases energy. the type of energy released is

A.nuclear energy
B.kinetic energy
C.electrical energy
D.potential energy

it's chemical energy

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The type of energy released when covalent bonds are broken during digestion is potential energy.

When we eat food, our body digests it to break down complex molecules into simpler forms that can be utilized for energy. In the case of glucose, the covalent bonds holding the glucose molecules together are broken down during digestion. This process releases the stored potential energy within the glucose molecule.

Potential energy is the energy that is stored in an object due to its position or condition. In this case, the potential energy is stored within the chemical bonds of glucose. When these bonds are broken, the energy is released and can be used by our cells to perform various functions.

The other options mentioned (nuclear energy, kinetic energy, and electrical energy) are not directly associated with the breaking of covalent bonds during digestion. Nuclear energy refers to energy released from atomic reactions, kinetic energy is the energy of motion, and electrical energy is related to the movement of electrons.