[Solved] Which of the following statements is true about cholesterol? A)It is an essential nutrient. B)It can be synthesized (made)inside the body. C)It provides 9 Calories per gram. D)It functions as an enzyme cofactor in metabolism. E)All of the above are true. Reproductive Skew: A concept in biology that describes the unequal distribution of reproductive opportunities among individuals within a group or population. Direct Fitness: The genetic contribution an individual makes to the next generation through its own offspring. Polyandry: A mating system where a female has multiple male partners over a breeding season, uncommon among mammals but observed in some species. Eusocial Group: A hierarchical social structure seen in certain animals, like naked mole rats and bees, characterized by cooperative care of offspring and division of labor.