Which of the Following Is an Example of Natural Selection

question 1

Multiple Choice

Which of the following is an example of natural selection?

• A) birds that evolve a new beak shape in order to exploit a different food source
• B) the extinction of the mammoths due to hunting by a new predator
• C) fossils of trilobites that have the same morphology but are separated by millions of years
• D) the mass extinction of the dinosaurs due to a meteorite's impact 65 million years ago

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Definitions:

Obsessive-compulsive Disorder

A mental disorder where people feel the need to check things repeatedly, perform certain routines, or have certain thoughts repeatedly.

Systematic Desensitization

A behavior therapy used to reduce clients’ anxiety responses through counterconditioning.

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers a response without prior learning.

Therapeutic Outcomes

The results or consequences of medical or psychological interventions, indicating the effectiveness or success of the treatment.