Question

1. what factor is a primary cause of gaining body fat with age?

○ exercising less with age
○ eating more calories over time
○ a decline in metabolism with age

1. what nutrient helps with the absorption of iron in women who are breastfeeding?

○ vitamin a
○ vitamin c
○ vitamin d
○ magnesium

Explanation:

Question 4

To determine the primary factor for gaining body fat with age, we analyze each option:

• Exercising less with age: Reduced physical activity can lead to fewer calories burned, contributing to fat gain, but it's not the most primary metabolic - related factor.
• Eating more calories over time: While overeating can cause fat gain, the body's internal processes also change with age.
• A decline in metabolism with age: As people age, their basal metabolic rate (the rate at which the body burns calories at rest) typically decreases. This means the body burns fewer calories even at rest, making it easier to gain fat if calorie intake and activity levels don't adjust accordingly. This is a primary physiological factor related to aging and body fat gain.

We need to find the nutrient that helps with iron absorption in breastfeeding women:

• Vitamin A: Primarily involved in vision, immune function, and cell growth, not iron absorption.
• Vitamin C: Vitamin C is known to enhance the absorption of non - heme iron (the type of iron often found in plant - based foods and also relevant for breastfeeding women who may have increased iron needs).
• Vitamin D: Involved in calcium and phosphorus metabolism and bone health, not iron absorption.
• Magnesium: Involved in many enzymatic reactions, muscle function, etc., not iron absorption.

Answer:

A decline in metabolism with age

Question 5