Question

which statement is true regarding the absorption of minerals from food?
a. minerals are easily destroyed by heat.
b. spinach is a great source of easily absorbed iron.
c. calcium is easily absorbed into the blood while potassium requires more effort.
d. calcium is excreted when sodium intake is high.

Explanation:

• Option a: Minerals are inorganic and heat - stable, so they are not easily destroyed by heat. Eliminate a.
• Option b: Spinach has non - heme iron which is not easily absorbed. Heme iron (from animal sources) is more easily absorbed. Eliminate b.
• Option c: Calcium absorption can be influenced by many factors, and potassium absorption also has its own regulatory mechanisms. Calcium is not easily absorbed into the blood without proper conditions, and potassium absorption does not necessarily require more effort compared to calcium in a simple way. Eliminate c.
• Option d: When sodium intake is high, the body excretes more calcium through the kidneys. This is a known physiological relationship.

Answer:

d. Calcium is excreted when sodium intake is high.