---
id: 67e94922f19f97037dbf2a33
title: Task 48
challengeType: 19
dashedName: task-48
lang: en-US
---

<!-- READING -->

# --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 helped Mark begin to understand programming concepts more clearly?

## --answers--

Writing unit tests for a legacy system.

### --feedback--

There's no mention of testing or legacy systems in the email.

---

Joining a code review and talking with Sophie.

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Debugging a major error on his own.

### --feedback--

Mark learned from reviewing and discussing code — not from debugging by himself.

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Rewriting the entire codebase from scratch.

### --feedback--

The email doesn't mention rewriting code.

## --video-solution--

2

# --explanation--

Mark mentions `sitting in on a code review` and learning from Sophie.

This experience helped him better understand programming terms, which makes it the most relevant detail.
