Step 1: Understanding the Question:
The objective of this question is to determine the macronutrient composition of an individual's diet in grams.
We are given the total daily caloric intake and the percentage of those calories that must come from carbohydrates.
We will calculate the total calories from carbohydrates and then convert those calories into grams.
Step 2: Key Formula or Approach:
To solve this question, we use two calculations:
1. Calculate the total calories contributed by carbohydrates:
\[ \text{Carbohydrate Calories} = \text{Total Calories} \times \left( \frac{\text{Carbohydrate Percentage}}{100} \right) \]
2. Convert carbohydrate calories into grams using the physiological fuel factor:
\[ \text{Grams of Carbohydrates} = \frac{\text{Carbohydrate Calories}}{\text{Energy Value per Gram}} \]
Where 1 gram of carbohydrate yields approximately \( 4 \text{ kcal} \) of energy.
Step 3: Detailed Explanation:
1. First, identify the total daily energy intake, which is \( 3200 \text{ kcal} \).
2. The percentage of daily energy that should come from carbohydrates is specified as \( 55% \).
3. Next, calculate the exact amount of energy in kilocalories derived from carbohydrate intake:
\[ \text{Carbohydrate Calories} = 3200 \times \frac{55}{100} = 3200 \times 0.55 = 1760 \text{ kcal} \]
4. This calculation shows that \( 1760 \text{ kcal} \) of the daily energy budget is provided by carbohydrates.
5. Now, we convert this energy value into grams of carbohydrates.
6. Nutrition science establishes that 1 gram of carbohydrate provides \( 4 \text{ kcal} \) of metabolizable energy.
7. Divide the total carbohydrate calories by this energy factor to find the weight in grams:
\[ \text{Grams of Carbohydrates} = \frac{1760 \text{ kcal}}{4 \text{ kcal/g}} = 440 \text{ g} \]
8. This indicates that the person must consume exactly \( 440 \text{ grams} \) of carbohydrates.
Step 4: Final Answer:
The resulting weight of carbohydrate consumption is \( 440 \text{ g} \), which corresponds to Option (C).