Which of the Following Dietary Components Has Not Recently Been

question 40

Multiple Choice

Which of the following dietary components has not recently been linked to depression?

• A) fatty acids
• B) iron(II)
• C) Vitamin D
• D) Vitamin B₁₂
• E) All of these have been potentially linked to depression.

---

Definitions:

Marginal Revenue

The augmented income from the sale of one more unit of a good or service.

Pure Competition

A market structure characterized by a large number of buyers and sellers, free entry and exit, and a homogeneous product, leading to price taking behavior.

Competitive Firm

A business that competes in a market where it has some influence on the prices of its products or services but faces competition from other firms.

Total Economic

A term likely intending to refer to 'total economic value,' which encompasses all direct and indirect values of a resource or entity.