The correct answer is Race.
Race has nothing with healthy weight and nutrient need. There are several factors such as gender, age and lifestyle which affects the healthy weight and nutrient needs of a person.
Gender: The male and the female body have different structural composition. The healthy weight and the nutritional needs of both the body differs.
Age: The nutritional requirement of a baby is quite different from the nutritional requirement of an adult, age is also a factor that is important.
Lifestyle: The lifestyle of a person determines the health of a person. the more healthy lifestyle you follow, the more healthy will be your body. Eating healthy diet and taking proper sleep are some of the healthy lifestyle that one should follow to be healthy.