It is approximately 1.7% of humans that are found to be born with biological traits that are associated with neither exactly male nor female. These conditions are called intersex, meaning that a person is born with reproductive system/s or organ/s that neither fits the characteristics of females or males.
To keep in the stored enzymes so it can keep synthesizing at night, even when there is no sunlight. -- Stomata serve two main functions - they allow carbon dioxide to reach the cells in the leaf where the majority of photosynthesis takes place and they allow water to be transpired out off the leaf. During the day, stomata are generally open to allow photosynthesis to take place as quickly as possible. At night, when the lack of light means photosynthesis can't take place, many plants close their stomata to reduce water loss. There is one group of mainly desert plants, known as CAM plants, that keep their stomata closed during the day when water loss would be greatest, and open them at night, using a biochemical method to effectively store carbon dioxide in the leaf overnight.
As far as I can tell it would be D. I took 5 million and multiplied it by 8 to get that.