One advantage of increasing the variation in a population by the recombination of parental genes is that
all offspring have an increased chance of survival.
natural selection is reduced.
the rate of evolution can increase
fewer mutant genes are passed to offspring

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

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your answer would be a, maximum exploitation of resources.