Which of the following is an example of an adaptation?

• A. A population decrease due to a natural disaster
• B. Random mutation in a gene with no effect on survival
• C. A sudden change in weather patterns
• D. The long neck of a giraffe allowing it to reach high leaves

Answer: (D)

Verified step by step guidance

1. Understand the concept of adaptation: An adaptation is a heritable trait that increases an organism's ability to survive and reproduce in its environment. It is typically shaped by natural selection over generations.
2. Analyze the options provided: Evaluate each option to determine if it fits the definition of an adaptation. For example, a population decrease due to a natural disaster is not an adaptation because it is an event, not a heritable trait.
3. Consider the role of random mutations: A random mutation in a gene with no effect on survival is not an adaptation because it does not provide a survival or reproductive advantage.
4. Evaluate environmental changes: A sudden change in weather patterns is an external event and not a trait of an organism, so it cannot be considered an adaptation.
5. Identify the correct example: The long neck of a giraffe allowing it to reach high leaves is an adaptation because it is a heritable trait that provides a survival advantage by enabling the giraffe to access food sources that other animals cannot reach.