What Detects the Presence or Absence of a Mark in a Predetermined

question 18

Multiple Choice

What detects the presence or absence of a mark in a predetermined place (popular for multiple-choice exams) ?

• A)magnetic ink character reader
• B)optical-character recognition
• C)optical-mark recognition
• D)point-of-sale

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Definitions:

Permian Extinction

A massive extinction event occurring about 252 million years ago, marking the boundary between the Permian and Triassic periods, and resulting in significant loss of species.

Carbon Dioxide Levels

The concentration of CO2 in the Earth's atmosphere, an important factor influencing climate change and global warming.

Marine Diversity

The variety and variability of life forms within ocean habitats, ranging from microscopic plankton to large marine mammals.

End-Cretaceous Extinction

A significant global extinction event approximately 66 million years ago, marking the end of the Cretaceous Period, characterized by the mass extinction of dinosaurs among other species.