On a Test of 50 Students, If 25 Students Answered

question 20

Multiple Choice

On a test of 50 students, if 25 students answered an item correctly, the item difficulty is

• A)25%.
• B)50%.
• C)75%.
• D)100%.

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Definitions:

Resistant to Erosion

A property of materials that are able to withstand the forces of erosion, such as wind, water, and ice.

Evaporated

The process by which water changes from a liquid to a vapor or gas due to heat without reaching boiling point.

Desert-like Environment

Areas characterized by dry conditions, sparse vegetation, and high temperatures, resembling a desert ecosystem.

Wind-blown Sands

Sands transported and deposited by the wind, often forming dunes in deserts and coastal regions.