A Factor That Has Significantly Contributed to Elimination of Rickets

question 50

Multiple Choice

A factor that has significantly contributed to elimination of rickets in developed countries is:

• A) an increase in outdoor activities.
• B) an increase in use of sunscreens.
• C) the availability of fresh produce year-round.
• D) the wide use of vitamin D-fortified milk.

---

Definitions:

Device Driver

Software that facilitates the communication between a device and its operating system.

Operating System

The foundational software that manages computer hardware and software resources, and provides common services for computer programs.

User Interface

Part of the operating system that enables individuals to interact with the computer.

JSON

A lightweight data-interchange format that is easy for humans to read and write, and easy for machines to parse and generate.