The muscular energy required by our body is given to us by:

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Air

Water

Oxygen

Food

answer is D.

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Detailed Solution

Concept: Humans consume foods such as vegetables and meat. Plants have provided nourishment to the animals we eat, either directly or indirectly. So, even if we eat meat, we are consuming plant energy. As a result, plants are the primary source of food. Plants use sunlight to produce food.
In a process known as photosynthesis, they use inorganic substances and convert them to glucose with the help of sunlight. Glucose can now be used as an energy source when needed. When we eat, this glucose is transferred to our bodies. This glucose is then depleted as a result of our muscular, neural, and other activities.As a result, the food we eat provides our bodies with the muscular energy they require.The energy stored in the glucose molecules is released in our muscles through metabolic reactions as the glucose molecule breaks down. Aside from glucose, many other compounds found in our diet provide us with energy.
Hence, option 4 is correct.

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