Final answer:
Jayden would need approximately 56 grams of protein each day.
Step-by-step explanation:
Protein provides energy for the body, but it is not measured in terms of kilocalories (kcal). Instead, protein is measured in grams. The Recommended Daily Allowance (RDA) for protein is generally around 0.8 grams per kilogram of body weight. To determine how much protein Jayden would need each day, we need to calculate 0.8 grams per kilogram of her body weight:
Protein needed = 0.8 grams/kg × 70 kg = 56 grams