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--instructions--

Read the text and answer the question below.

--questions--

--text--

After his conversation with Sophie, Mark decided to write to his mentor David to reflect on what he had learned.

Hi David,

I just wanted to share a quick update. After sitting in on a recent code review, I finally feel like I'm starting to understand some key programming concepts.

Sophie explained terms like polymorphism, encapsulation, inheritance, and abstraction. For example, I saw how encapsulation helps with keeping details hidden and making the code easier to work with. I also noticed polymorphism in a method that changes behavior depending on the input.

I tried writing a small class using these ideas — focusing on clean code structure, reusing properties and methods, and simplifying functionality.

Does it mean I'm on the right track if I can explain these terms and apply them in a simple project?

Thanks for explaining these things over time. I appreciate the explanations and all your support.

Best,

Mark

What can change behavior based on input or context?

--answers--

Polymorphism

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Encapsulation

--feedback--

Encapsulation is about hiding details, not changing behavior.

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Abstraction

--feedback--

Abstraction focuses on reducing complexity, not behavior changes.

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Inheritance

--feedback--

Inheritance is about reusing structure, not about dynamic behavior.

--video-solution--

1

--explanation--

To find the correct answer, focus on the text where Mark mentions method that changes behavior depending on the input.

He is describing polymorphism, which allows different behavior depending on input or context.