Who of the following biologists was awarded 1961 Nobel prize for elucidating the sequence of dark reaction of photosynthesis?

The correct option is A Melvin Calvin
Calvin discovered the steps of dark reaction which maps the complete route that carbon travels through a plant during photosynthesis.
van Niel demonstrated that photosynthesis is a light dependent reaction in which CO2 is reduced to form sugar.
Blackman propounded the ‘law’ or principle of limiting factors.​​​​​​​
Hill demonstrated that oxygen produced by plants during photosynthesis is a light dependent reaction.​