Which Substance Requires Sunlight for Its Synthesis

question 86

Multiple Choice

Which substance requires sunlight for its synthesis?

• A) cholesterol
• B) vitamin D
• C) vitamin K
• D) amino acids

---

Definitions:

Direct Worker Actions

Collective activities undertaken by workers, such as strikes or work-to-rule, to exert pressure on employers during labor disputes.

Ludlow Massacre

An event in 1914 where a labor conflict between miners and the Colorado National Guard led to the death of numerous strikers and their families.

Union Recognition

The formal acknowledgment by an employer that a labor union represents the collective interests of its workers, often followed by collective bargaining.

Better Wages

An improvement in the compensation that workers receive for their labor, often a key objective of labor unions and worker advocacy groups.