$6C{O_2} + 12{H_2}O\;\dfrac{{sunlight}}{{chlorophyll}} > {C_6}{H_{12}}{O_6} + {\rm{ }}6{H_2}O{\rm{ }} + 6{O_2}$
The above equation represents
A) Photosynthesis
B) Respiration
C) Transpiration
D) Fermentation

Hint: It is the process used by plants to make their food. It is the process which is also used by algae to prepare their food.

Complete answer:
To answer this question, first, we need to know how plants prepare their food. Plants can make their food but humans and animals cannot. The basic components of the food are carbohydrates, proteins, fats, vitamins and minerals, these components are called nutrients. Plants make their food by the use of raw materials such as soil, water, carbon dioxide and minerals. Photosynthesis is the mechanism by which plants produce food from light, nutrients, water, and dioxide.
Now lets us find the solution from the given options-
The equation represents the photosynthesis process by which plants and some bacteria generate glucose from carbon dioxide and water using sunlight energy. Photosynthesis takes place in chloroplasts. In the chloroplast grana, chlorophyll is a green photosynthetic pigment that absorbs sunlight for photosynthesis.
The respiration equation is the opposite reaction to photosynthesis that uses the energy and water from the sun to turn carbon dioxide into sugar and oxygen. The equation of respiration is
${C_6}{H_{12}}{O_6} + 6{O_2} \to 6C{O_2} + 6{H_2}O + heat$
Transpiration is a physical mechanism in which the roots of plants accumulate water in the soil, migrate up the xylem, and evaporate from the leaf. There is no chemical equation in this phase because it is not a chemical change itself.
The basic chemical equation of fermentation is ${C_6}{H_{12}}{O_6} + 6{O_2} \to 2{C_2}{H_5}OH + 2CO$. Fermentation is the process that produces ethanol from glucose.

Thus, the right answer is option A i.e., Photosynthesis.

Note: Respiration is the opposite reaction of photosynthesis. In respiration, glucose, and oxygen produced carbon dioxide and water.