Students in biology class were presented with the model above and asked to revise the model to show the structures that would be present after it is used for a cellular function such as muscle contraction. Which of the following is the correct way to revise the molecule? In 1-2 sentences, justify your answer choice with reasoning.

(AKS 4a)

Remove structure D
Remove structures A, B, and C
Remove structures A, B, C, and D
Remove structures C and D

I think it's just c and d

Water is the main constituent on the earth surface. It is important for all living beings to survive. It is a transparent, odourless, colourless chemical substance. Water has vital role in atmosphere. It undergoes several cycles. In water cycle, water from rivers, lakes and streams enters the atmosphere through Evaporation. In evaporation the element or the compound in it's liquid state changes to gaseous state below the temperature at which the it boils. This is due to the high temperature. Due to high temperature the water from different water bodies enters the atmosphere in the form of vapours. In the carbon cycle, water exits the pore of leaves in plants by a process called as transpiration. Transpiration is a process by which the moisture is transferred from roots to the outside of the leaf whic

Therefore, In water cycle, water from rivers, lakes and streams enters the atmosphere through vaporisation. in the carbon cycle, water exits the pore of leaves in plants by a process called as transpiration.  In nitrogen cycle, the water  as well as dead organism moves nitrogen from the atmosphere into the soil.